Answer:
Word types can be divided into nine parts of speech:
nouns
pronouns
verbs
adjectives
adverbs
prepositions
conjunctions
articles/determiners
interjections
Some words can be considered more than one part of speech, depending on context and usage.
Interjections can form complete sentences on their own.
Explanation:
The parts of speech are commonly divided into open classes (nouns, verbs, adjectives, and adverbs) and closed classes (pronouns, prepositions, conjunctions, articles/determiners, and interjections). The idea is that open classes can be altered and added to as language develops and closed classes are pretty much set in stone. For example, new nouns are created every day, but conjunctions never change.
In contemporary linguistics, the label part of speech has generally been discarded in favor of the term word class or syntactic category. These terms make words easier to qualify objectively based on word construction rather than context. Within word classes, there is the lexical or open class and the function or closed class.
