apply

be pertinent or relevant or applicable

“The same laws apply to you!”

refer (a word or name) to a person or thing

avail oneself to

“apply a principle”

be applicable to; as to an analysis

apply to a surface

give or convey physically

ensure observance of laws and rules

put into service; make work or employ for a particular purpose or for its inherent or natural purpose

“I apply this rule to get good results”

apply oneself to

“Please apply yourself to your homework”

ask (for something)

“apply for a job”