The word superiors is a plural noun, the plural of the a superior, which is someone better or more senior than you. eg I am being assessed by my superiors. Superior is an adjective meaning better or more exalted. eg He had a superior manner, thinking himself better than his acquaintances.
Superiority is a noun. Here's an example sentence:
The superiority of the apple pie is indisputable.
The part of speech that the word my is used as is an adjective.
A suffix changes a word's part of speech. For example, the word 'happy' is an adjective. But when you add a suffix, which is an ending, it can change the part of speech. Happily is an adverb. Happiness is a noun.
for
it depends what word it is it could be any part of speech depending on the sentence
The word power is a noun. The plural form is powers.
The part of speech for this particular word is a noun.
The part of speech that the word my is used as is an adjective.
H is a letter, not a word. To be a part of speech, it needs to be a word.
The part of speech for the word civilian is English grammar.
The part of speech for the word diplomacy is a noun.
The word speech is a noun.
The part of speech for this particular word is a noun.
The word speech is a noun.
The word speech is a noun.
The word speech is a noun.
His superiors felt he did not deserve the promotion.
What "part of speech" is the word "said?"