critic, critique

Critic or critic ( crih tick ) means a person who offers his or her opinion of someone else's work--a film, music, an academic paper, etc.--
We always watch our favorite movie critic before deciding what to see.
The restaurant critic always paid in cash, so the staff wouldn't know who she was.

Critique or critique ( crih teek ) means an oral or written analysis or opinion of someone else's work; a review--
We enjoyed listening to his lively critique; it was more interesting than the original paper.
They had a public argument over his critique of the play.

Now that you know that, you can say--
"The drama critic offered an insightful critique of last night's performance."

Note--"criticize" is a verb ( action word ), meaning to offer an opinion of a work, most commonly to find fault with--
He always feels a need to criticize what she does.
Note #2--"criticism"is a noun ( thing or idea ), meaning the opinion offered--
He got tired of her constant criticism and  filed for a divorce.
Note #3--"critical" is an adjective ( describes something ), meaning something that describes an opinion, usually meaning a negative opinion--
We liked the new restaurant, but he was critical.
"Critical" is often used to mean very serious, or life-threatening, borrowed from medical or hospital jargon--
We called the hospital; he is in critical condition.
Note #4--"critically" is an adverb ( describes an action ), meaning in an opinionated or fault-finding way--
He always spoke critically of anything new.
"Critically" may also mean in a serious or life-threatening way--
He was critically injured in the crash.