A guest house
Yes, but "guest" is usually a noun (a person), and more rarely a verb. It is considered an adjective (but is probably an adjunct) in guest towel, guest room, or guest speaker.
The word "guest" is a singular, common noun; a word for a person. The word guest is sometimes archaically used as a verb and may also be an adjective, as in "guest house."
The word either can be an adjective. Another word to use is whichever.
Pale is the word that you would use as an adjective.
There is an adjective in that question. An adjective describes a noun or a pronoun. In some cases, the same word can be either an adjective or an adverb.
the adjective is captive - the noun is captivity
An adjective describes a noun.
a good adjective is ugly
NO but in the sentence "Use of the word "in" as an adjective is IN these days" the IN is an adjective
The adjective form of the word credit is creditable. If you are looking for an adjective that would describe the word credit, you could use good or bad.
The guest's bags were brought to the room by the porter.
place