physicist vs scientist

physicist and scientist both are nouns.

Word	Noun	Adjective	Verb	Adverb
physicist	Yes	No	No	No
scientist	Yes	No	No	No

As nouns, scientist is a hypernym of physicist; that is, scientist is a word with a broader meaning than physicist:

physicist (noun)	scientist (noun)
a scientist trained in physics	a person with advanced knowledge of one or more sciences