loggia vs arcade

loggia and arcade both are nouns.

Word	Noun	Adjective	Verb	Adverb
loggia	Yes	No	No	No
arcade	Yes	No	No	No

As nouns, arcade is a hypernym of loggia; that is, arcade is a word with a broader meaning than loggia:

loggia: a roofed arcade or gallery with open sides stretching along the front or side of a building; often at an upper level
arcade: a structure composed of a series of arches supported by columns

Other hypernyms of loggia include colonnade.

loggia (noun)	arcade (noun)
a roofed arcade or gallery with open sides stretching along the front or side of a building; often at an upper level	a structure composed of a series of arches supported by columns
	a covered passageway with shops and stalls on either side