Authorities is a plural noun.
It can be a verb: "I alerted the authorities." It can be an adjective: "Alerted authorities are more effective than uninformed authorities."
It can be a verb: "I alerted the authorities." It can be an adjective: "Alerted authorities are more effective than uninformed authorities."
Civil is an adjective. civil authorities - adjective + noun civil liberties - adjective + noun
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 diplomacy is a noun.
The part of speech for the word "boulevard" is a noun.
The part of speech for the word civilian is English grammar.
The word speech is a noun.
The part of speech for this particular word is a noun.
The word speech is a noun.