carver vs diner

carver and diner both are nouns.

Word	Noun	Adjective	Verb	Adverb
carver	Yes	No	No	No
diner	Yes	No	No	No

As nouns, diner is a hypernym of carver; that is, diner is a word with a broader meaning than carver:

carver (noun)	diner (noun)
an artist who creates sculptures	a passenger car where food is served in transit
someone who carves the meat	a restaurant that resembles a dining car
makes decorative wooden panels	a person eating a meal (especially in a restaurant)