foray

nouns

a sudden short attack
an initial attempt (especially outside your usual areas of competence)
"scientists' forays into politics"
is a type of (narrower)
earnest and conscientious activity intended to do or accomplish something
"made an effort to cover all the reading material"; "wished him luck in his endeavor"; "she gave it a good try"

verbs

steal goods; take as spoils
"During the earthquake people looted the stores that were deserted by their owners"
briefly enter enemy territory
is a type of (narrower)
pass into or through, often by overcoming resistance
"The bullet penetrated her chest"