plural form vs stocks

plural form and stocks both are nouns.

Word	Noun	Adjective	Verb	Adverb
plural form	Yes	No	No	No
stocks	Yes	No	No	No

plural form (noun)	stocks (noun)
the form of a word that is used to denote more than one	a former instrument of punishment consisting of a heavy timber frame with holes in which the feet (and sometimes the hands) of an offender could be locked
	a frame for constraining an animal while it is receiving veterinary attention or while being shod
	a frame that supports a boat while it is under construction