soft drug vs hash

soft drug and hash both are nouns.

Word	Noun	Adjective	Verb	Adverb
soft drug	Yes	No	No	No
hash	Yes	No	Yes	No

As nouns, hash is a hyponym of soft drug; that is, hash is a word with a more specific, narrower meaning than soft drug:

soft drug: a drug of abuse that is considered relatively mild and not likely to cause addiction
hash: purified resinous extract of the hemp plant; used as a hallucinogen

Other hyponyms of soft drug include bhang, cannabis, ganja, marihuana, marijuana, haschisch, hasheesh, hashish.

soft drug (noun)	hash (noun)
a drug of abuse that is considered relatively mild and not likely to cause addiction	purified resinous extract of the hemp plant; used as a hallucinogen
	chopped meat mixed with potatoes and browned

soft drug (verb)	hash (verb)
	chop up