swot up vs mug up

swot up and mug up both are verbs.

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

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

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

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