Frequency is a noun.
an inventor is a designer but a designer is not an inventor
inventor of fiberglass
The word inventions is a noun. It is the plural form of invention.
The possessive form of the noun inventor is inventor's.Example: The inventor's patent was finally granted.
part of speech
The part of speech for this particular word is a noun.
what part of speech is beneath
adverb
The part of speech for "answer" is a noun.
The part of speech for "lecturer" is a noun.
The part of speech for "breezy" is an adjective.
The part of speech for "buried" is a verb.
The part of speech for "rapid" is an adjective.
The part of speech for "indefinite" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "explicit" is an adjective.