plow vs talk about

plow is a noun but talk about is not a noun.

Word	Noun	Adjective	Verb	Adverb
plow	Yes	No	Yes	No
talk about	No	No	Yes	No

As verbs, talk about is a hyponym of plow; that is, talk about is a word with a more specific, narrower meaning than plow:

Other hyponyms of plow include theologise, theologize, discourse, discuss.

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

plow (verb)	talk about (verb)
act on verbally or in some form of artistic expression	to consider or examine in speech or writing
to break and turn over earth especially with a plow	discuss or mention
move in a way resembling that of a plow cutting into or going through the soil