Meaning : Find out, learn, or determine with certainty, usually by making an inquiry or other effort.
I want to see whether she speaks French.
See whether it works.
Find out if he speaks Russian.
Check whether the train leaves on time.
Meaning : Trap. Especially in an error or in a reprehensible act.
He was caught out.
She was found out when she tried to cash the stolen checks.
Synonyms : catch out