portal vs entryway

portal and entryway both are nouns.

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

As nouns, entryway is a hypernym of portal; that is, entryway is a word with a broader meaning than portal:

Other hypernyms of portal include entrance, entranceway, entree, entry.

portal (noun)	entryway (noun)
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
a site that the owner positions as an entrance to other sites on the internet