work out vs limber up

work out and limber up both are verbs.

Word	Noun	Adjective	Verb	Adverb
work out	No	No	Yes	No
limber up	No	No	Yes	No

As verbs, limber up is a hyponym of work out; that is, limber up is a word with a more specific, narrower meaning than work out:

work out: do physical exercise
limber up: make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity

Other hyponyms of work out include loosen up, warm up, train, tumble, strengthen, tone, tone up, press, weight-lift, weightlift.

work out (verb)	limber up (verb)
do physical exercise	make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity
give a workout to	attach the limber
come up with
work out in detail
find the solution to (a problem or question) or understand the meaning of
make a mathematical calculation or computation
be calculated
happen in a certain way, leading to, producing, or resulting in a certain outcome, often well