tripper vs substance abuser

tripper and substance abuser both are nouns.

Word	Noun	Adjective	Verb	Adverb
tripper	Yes	No	No	No
substance abuser	Yes	No	No	No

As nouns, substance abuser is a hypernym of tripper; that is, substance abuser is a word with a broader meaning than tripper:

tripper: (slang) someone who has taken a psychedelic drug and is undergoing hallucinations
substance abuser: a person who takes drugs

Other hypernyms of tripper include drug user, user.

tripper (noun)	substance abuser (noun)
a catch mechanism that acts as a switch	a person who takes drugs
a tourist who is visiting sights of interest
a walker or runner who trips and almost falls
(slang) someone who has taken a psychedelic drug and is undergoing hallucinations