frisk vs run around

frisk is a noun but run around is not a noun.

Word	Noun	Adjective	Verb	Adverb
frisk	Yes	No	Yes	No
run around	No	No	Yes	No

As verbs, frisk and run around are synonyms defined as:

Other synonyms of frisk include cavort, disport, frolic, gambol, lark, lark about, rollick, romp, skylark, sport.

frisk (noun)	run around (noun)
the act of searching someone for concealed weapons or illegal drugs

frisk (verb)	run around (verb)
search as for concealed weapons by running the hands rapidly over the clothing and through the pockets	play boisterously
play boisterously