swot up vs swot

swot up is not a noun while swot is a noun.

Word	Noun	Adjective	Verb	Adverb
swot up	No	No	Yes	No
swot	Yes	No	Yes	No

As verbs, swot up and swot are synonyms defined as:

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

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

swot up (verb)	swot (verb)
study intensively, as before an exam	study intensively, as before an exam