front entrance vs front door

front entrance and front door both are nouns.

Word	Noun	Adjective	Verb	Adverb
front entrance	Yes	No	No	No
front door	Yes	No	No	No

As nouns, front entrance and front door are synonyms defined as:

front entrance and front door: exterior door (at the entrance) at the front of a building

front entrance (noun)	front door (noun)
exterior door (at the entrance) at the front of a building	exterior door (at the entrance) at the front of a building