puddle vs mess around

puddle is a noun but mess around is not a noun.

Word	Noun	Adjective	Verb	Adverb
puddle	Yes	No	Yes	No
mess around	No	No	Yes	No

As verbs, mess around is a hypernym of puddle; that is, mess around is a word with a broader meaning than puddle:

Other hypernyms of puddle include monkey, monkey around, muck about, muck around, potter, putter, tinker.

puddle (noun)	mess around (noun)
something resembling a pool of liquid
a small body of standing water (rainwater) or other liquid
a mixture of wet clay and sand that can be used to line a pond and that is impervious to water when dry

puddle (verb)	mess around (verb)
eliminate urine	do random, unplanned work or activities or spend time idly
mix up or confuse
mess around, as in a liquid or paste
make into a puddle
work a wet mixture, such as concrete or mud
make a puddle by splashing water
dip into mud before planting
subject to puddling or form by puddling
wade or dabble in a puddle