Under the DSM-5, there are eight types of substance use disorders that doctors can diagnose. Caffeine is also listed as a substance-related disorder under DSM-5, however, it is not designated as a substance use disorder.2. Alcohol.
adverbs answer the questions-how ,why,when and where.ie,adverb of manner,adverb of purpose and reason,adverb of time and adverb of place.
Definition. An adverb is the part of speech (or word class) that's primarily used to modify a verb, adjective, or other adverb. Adverbs can also modify prepositional phrases, subordinate clauses, and complete sentences.