prowl

nouns

the act of prowling (walking about in a stealthy manner)
is a type of (narrower)
the act of traveling by foot
"walking is a healthy form of exercise"

verbs

move about in or as if in a predatory manner
"The suspicious stranger prowls the streets of the town"
is derived from
is a type of (narrower)
use one's feet to advance; advance by steps
"Walk, don't run!"; "We walked instead of driving"; "She walks with a slight limp"; "The patient cannot walk yet"; "Walk over to the cabinet"
loiter about, with no apparent aim