buy vs sop

buy and sop both are nouns.

Word	Noun	Adjective	Verb	Adverb
buy	Yes	No	Yes	No
sop	Yes	No	Yes	No

As verbs, sop is a hyponym of buy; that is, sop is a word with a more specific, narrower meaning than buy:

Other hyponyms of buy include buy off, pay off.

buy (noun)	sop (noun)
an advantageous purchase	a concession given to mollify or placate
	piece of solid food for dipping in a liquid

buy (verb)	sop (verb)
accept as true	cover with liquid; pour liquid onto
obtain by purchase; acquire by means of a financial transaction	dip into liquid
make illegal payments to in exchange for favors or influence	be or become thoroughly soaked or saturated with a liquid
acquire by trade or sacrifice or exchange	give a conciliatory gift or bribe to
be worth or be capable of buying