porch vs front porch

porch and front porch both are nouns.

Word	Noun	Adjective	Verb	Adverb
porch	Yes	No	No	No
front porch	Yes	No	No	No

As nouns, front porch is a hyponym of porch; that is, front porch is a word with a more specific, narrower meaning than porch:

porch: a structure attached to the exterior of a building often forming a covered entrance
front porch: a porch for the front door

Other hyponyms of porch include back porch, deck, portico, stoep, stoop, gallery, veranda, verandah.

porch (noun)	front porch (noun)
a structure attached to the exterior of a building often forming a covered entrance	a porch for the front door