ploughshare vs plowshare

ploughshare and plowshare both are nouns.

Word	Noun	Adjective	Verb	Adverb
ploughshare	Yes	No	No	No
plowshare	Yes	No	No	No

As nouns, ploughshare and plowshare are synonyms defined as:

ploughshare and plowshare: a sharp steel wedge that cuts loose the top layer of soil

Other synonyms of ploughshare include share.

ploughshare (noun)	plowshare (noun)
a sharp steel wedge that cuts loose the top layer of soil	a sharp steel wedge that cuts loose the top layer of soil