entree vs portal

entree and portal both are nouns.

Word	Noun	Adjective	Verb	Adverb
entree	Yes	No	No	No
portal	Yes	No	No	No

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

entree (noun)	portal (noun)
an entrance, especially a theatrical entrance onto a stage or as if onto a stage	a grand and imposing entrance (often extended metaphorically)
something that provides access (to get in or get out)	a short vein that carries blood into the liver
the right to enter	a site that the owner positions as an entrance to other sites on the internet
the principal dish of a meal