grind away vs swot

grind away is not a noun while swot is a noun.

Word	Noun	Adjective	Verb	Adverb
grind away	No	No	Yes	No
swot	Yes	No	Yes	No

As verbs, grind away and swot are synonyms defined as:

Other synonyms of grind away include bone, bone up, cram, drum, get up, mug up, swot up.

grind away (noun)	swot (noun)
	an insignificant student who is ridiculed as being affected or boringly studious

grind away (verb)	swot (verb)
study intensively, as before an exam	study intensively, as before an exam