upper vs drug of abuse

drug of abuse vs upper

upper and drug of abuse both are nouns.

upper is an adjective but drug of abuse is not an adjective.

Word	Noun	Adjective	Verb	Adverb
upper	Yes	Yes	No	No
drug of abuse	Yes	No	No	No

As nouns, drug of abuse is a hypernym of upper; that is, drug of abuse is a word with a broader meaning than upper:

upper: a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
drug of abuse: a drug that is taken for nonmedicinal reasons (usually for mind-altering effects); drug abuse can lead to physical and mental damage and (with some substances) dependence and addiction

Other hypernyms of upper include street drug, excitant, stimulant, stimulant drug.

upper (noun)	drug of abuse (noun)
piece of leather or synthetic material that forms the part of a shoe or boot above the sole that encases the foot	a drug that is taken for nonmedicinal reasons (usually for mind-altering effects); drug abuse can lead to physical and mental damage and (with some substances) dependence and addiction
a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
the higher of two berths

upper (adjective)	drug of abuse (adjective)
the topmost one of two; upper
higher in place or position
superior in rank or accomplishment

Difference between upper and drug of abuse

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