Which part of speech is associated with the suffix -ist?

The suffix -ist is commonly associated with nouns. It is used to denote a person who specializes in a particular field or engages in a specific activity. For example, a "scientist" is someone who practices science, and a "guitarist" is a person who plays the guitar. This suffix indicates a role or profession, making it a key identifier in forming profession-related nouns.

In contrast, the other parts of speech listed do not typically take on the -ist suffix. Adjectives often modify nouns, verbs denote actions or states, and adverbs modify verbs, adjectives, or other adverbs but do not form nouns related to roles or expertise. Thus, the choice of noun with the suffix -ist is not only correct but also highlights an important aspect of word formation in the English language.