a porch is a noun
The Porch Index of Speech Ability and the Boston Diagnostic Aphasia Examination
Generally there is no need for a roof jack in a porch roof. If the porch ceiling will be covered you could run a vent through the roof.
No the enclosed attached porch is part of the home itself. No if the porch was an unattached stand-alone building it would fall under the appurtenant structures section of the policy.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.