roach vs forget me drug

roach and forget me drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
roach	Yes	No	Yes	No
forget me drug	Yes	No	No	No

As nouns, roach and forget me drug are synonyms defined as:

Other synonyms of roach include circle, Mexican valium, R-2, roofy, rope, rophy.

roach (noun)	forget me drug (noun)
any of numerous chiefly nocturnal insects; some are domestic pests	street names for flunitrazepam
European freshwater food fish having a greenish back
the butt of a marijuana cigarette
street names for flunitrazepam
a roll of hair brushed back from the forehead

roach (verb)	forget me drug (verb)
cut the mane off (a horse)
comb (hair) into a roach