plough vs delve

plough is a noun but delve is not a noun.

Word	Noun	Adjective	Verb	Adverb
plough	Yes	No	Yes	No
delve	No	No	Yes	No

plough (noun)	delve (noun)
a farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing

plough (verb)	delve (verb)
to break and turn over earth especially with a plow	turn up, loosen, or remove earth
move in a way resembling that of a plow cutting into or going through the soil