The word source can be a noun and a verb.
The noun is the person or place in which knowledge is acquired from.
The verb form means to obtain something.
The phrase "secondary source" is a singular noun. The plural term is secondary sources.
The freedom of speech comes from the Bill of Rights in the first amendment. Speech as in rulings by the Supreme Court can be used in many ways. Protesting government policies is freedom of speech, political Cartoons, books, editorial letters, burning the flag , and other sources are part of the freedom of speech.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
The part of speech for "explicit" is an adjective.
The part of speech for "lecturer" is a noun.
The part of speech for "rapid" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "breezy" is an adjective.