The word frontier is a noun.
It can also be an adjective to mean bordering.
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "twirl" is a verb.
The word frontier is a noun. The plural is frontiers. Frontier can also be used as an adjective.
There is no "frontier " country. Usually a frontier is an unsettled area that is part of a country.
New Frontier was the name attached to Kennedy's domestic package. The name came from a phrase in Kennedy 1960 nomination acceptance speech in which he said that America was standing on the verge of a new frontier.
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
Frontier: The part of a country that borders another country; border; boundary
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.