The word mate can be a noun and a verb.
The noun form is another term for "friend".
The verb form refers to coming together as a pair to raise offspring.
Elsewhere is an adverb.
Another is a determiner.
The word otherwise is an adverb. It means to do something in a manner that is different.
Yes, the noun 'mate' is an abstract noun; whether it's a spouse or a sock, mate is a concept, not the physical person or thing.
Check mate blind date ronald regan ginger pokemon
Gday Mate
Meh, it's just part of their speech pattern.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "lecturer" is a noun.