Chosen can be the past participle of the verb choose, an adjective, or a noun.
Examples:
Past participle: I realized immediately that I had not chosen wisely.
Adjective: Gordon was the director's chosen successor.
Noun: The chosen will be summoned to the great hall at midnight.
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 topic that the speaker has chosen
The topic of the speech
A nomination speech is when a candidate who is chosen first speaks. The speech includes where the candidate stands and why you should chose him or her.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
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 part of speech for "explicit" is an adjective.