Remain is usually a verb, as in "Five contestants remain."
As a noun, it is usually plural (remains), as in "The cremated remains were placed in an urn."
The word "remained" is a verb. It functions as the past tense of the verb "remain," which means to stay in the same place or to continue to exist.
part of speech
The part of speech for this particular word is a noun.
adverb
what part of speech is work
what part of speech is beneath
Sashay is a verb. It means to walk in an exaggerated, showy manner, often with hip swaying.
"Did not" or "didn't" is a contraction of the auxiliary verb "did" and the adverb "not," forming a negative past tense construction in English.
Adjective
The word speech is a noun.
Yes, a proper noun is a type of noun that specifically names a unique person, place, thing, or idea and is typically capitalized. It is part of the broader category of nouns in the classification of parts of speech in grammar.
Yes, conjunction is a part of speech.