"Lightning" is a noun.
Sometimes people try to use it as an adjective to mean "fast" (ex, "with lightning speed") but it really should be used as "like lighting" or "lightning-fast" or so on.
"Thunderstorm" is a noun.
"Diameter" is a noun.
The word radiance is a noun. The plural is radiances.
Invisibility is a noun.
The word moving is a verb. It is the present participle of the verb move.
The word lightning is a noun. It is a flash of light in the sky produced by electricity within a cloud.
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.
What "part of speech" is the word "said?"