The word 'seventh' is a noun and an adjective.
The noun 'seventh' is a word for a person or thing in a series of six plus one; a word for each of seven equal parts; a word for a thing.
The adjective 'seventh' describes a noun as one more than six in a series or group.
Examples:
Wally is the seventh in a family of eight children. (noun)
July is the seventh month in a calendar year. (adjective)
The part of speech that the word my is used as is an adjective.
The part of speech for this particular word is a noun.
The part of speech for the word diplomacy is a noun.
The part of speech for the word civilian is English grammar.
H is a letter, not a word. To be a part of speech, it needs to be a word.
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.
What "part of speech" is the word "said?"
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.