Morphology (linguistics)
The linguist Pānini formulated 3,959 rules of Sanskrit morphology in the text Aśtādhyāyī. This work dates back to ancient India and used a constituency grammar to describe word formation. Studies in Arabic morphology, including the Marāh Al-Arwāh of A'hamad b. 'Ali Mas'ud, date back to at least 1200 CE. The Greco-Roman grammatical tradition also engaged in morphological analysis before these later developments. August Schleicher introduced the term morphology into linguistics in 1859. These early efforts laid the groundwork for understanding how words are constructed from smaller meaningful units.
A lexeme is a set of inflected word-forms that is often represented with the citation form in small capitals. For instance, the lexeme eat includes the word-forms eat, eats, eaten, and ate. Eat and eats are therefore different word-forms of the same lexeme. In contrast, eat and eater are distinct lexemes, as they represent two different concepts. The term word has no well-defined meaning in this context. Instead, scholars use lexeme and word-form to distinguish between abstract concepts and their concrete realizations. Latin offers examples where suffixes like -que attach to noun phrases rather than individual nouns. Kwak'wala presents an extreme case where semantic affixes phonologically attach to preceding lexemes instead of the ones they semantically pertain to.
Rules of the first kind relate to different forms of the same lexeme but other rules relate to different lexemes. Rules of the first kind are inflectional rules, but those of the second kind are rules of word formation. The generation of the English plural dogs from dog is an inflectional rule. Compound phrases and words like dog catcher or dishwasher are examples of word formation. Informally, word formation rules form new words while inflection rules yield variant forms of the same word. In word formation, the resultant word may differ from its source word's grammatical category. In the process of inflection, the word never changes its grammatical category. The distinction between these two types of rules remains unclear-cut for many linguists.
One of the largest sources of complexity in morphology is that the one-to-one correspondence between meaning and form scarcely applies to every case in the language. In English, there are word form pairs like ox/oxen, goose/geese, and sheep/sheep whose difference departs from regular patterns. Even cases regarded as regular, such as -s, are not so simple. The -s in dogs is not pronounced the same way as the -s in cats. Phonological rules constrain the sounds that can appear next to each other in a language. Morphological rules applied blindly would often violate phonological rules by resulting in sound sequences prohibited in the language. To rescue the word dish, a vowel sound is inserted between the root and the plural marker. Those cases where the same distinction is effected by alternative forms constitute allomorphy.
There are three principal approaches to morphology and each tries to capture distinctions above in different ways. Morpheme-based morphology makes use of an item-and-arrangement approach. Lexeme-based morphology normally makes use of an item-and-process approach. Word-based morphology normally makes use of a word-and-paradigm approach. In morpheme-based morphology, word forms are analyzed as arrangements of morphemes. A morpheme is defined as the minimal meaningful unit of a language. In words such as independently, the morphemes are said to be in-, depend, -ent, and -ly. More recent and sophisticated approaches, such as distributed morphology, seek to maintain the idea of the morpheme while accommodating non-concatenated processes. Item-and-process theories often break down in cases like fusional languages because they assume separate rules for categories that turn out to be artificial.
Some languages are isolating and have little to no morphology while others are agglutinative whose words tend to have many easily separable morphemes. An agglutinative language is Turkish and practically all Turkic languages. Latin and Greek are prototypical inflectional or fusional languages. A standard example of an isolating language is Chinese. Pingelapese is a Micronesian language spoken on the Pingelap atoll and on two of the eastern Caroline Islands called Pohnpei. Verbal suffixes are morphemes added at the end of a word to change its form. Prefixes are those that are added at the front. The Pingelapese suffix -kin means with or at when added to a verb. Directional suffixes give listeners a better idea of where the subject is headed. The verb alu means to walk while directional suffixes provide detail about direction.
Common questions
Who formulated 3,959 rules of Sanskrit morphology in the text Aśtādhyāyī?
The linguist Pānini formulated 3,959 rules of Sanskrit morphology in the text Aśtādhyāyī. This work dates back to ancient India and used a constituency grammar to describe word formation.
When did August Schleicher introduce the term morphology into linguistics?
August Schleicher introduced the term morphology into linguistics in 1859. These early efforts laid the groundwork for understanding how words are constructed from smaller meaningful units.
What is the difference between inflectional rules and word formation rules?
Inflectional rules relate to different forms of the same lexeme while word formation rules relate to different lexemes. In the process of inflection, the word never changes its grammatical category but the resultant word may differ from its source word's grammatical category in word formation.
Which languages are examples of agglutinative and isolating types?
Turkish and practically all Turkic languages are examples of agglutinative languages where words tend to have many easily separable morphemes. Chinese serves as a standard example of an isolating language that has little to no morphology.
How does Pingelapese use verbal suffixes to indicate direction?
Verbal suffixes are morphemes added at the end of a word to change its form and directional suffixes give listeners a better idea of where the subject is headed. The verb alu means to walk while directional suffixes provide detail about direction.