aider

As a noun aider

is one that assists.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between aider and responder

is that aider is one that assists while responder is a person that responds to an emergency situation or other calling.

As nouns the difference between assister and aider

is that assister is one who assists; an assistant or helper while aider is one that assists.

As nouns the difference between aider and abettor

is that aider is one that assists while abettor is one that abets an offender; one that incites; instigates; encourages.

As a noun aider

is one that assists.

As a determiner either is

each of two.

As a pronoun either is

both, each of two or more.

As an adverb either is

as well.

As a conjunction either is

introduces the first of two options, the second of which is introduced by "or".

As nouns the difference between comforter and aider

is that comforter is a person who comforts someone who is suffering while aider is one that assists.

As a proper noun Comforter

is the Holy Spirit, the Holy Ghost.

Aidee is likely misspelled.

Aidee has no English definition.

As a noun aider

is one that assists.

As nouns the difference between aider and rider

is that aider is one that assists while rider is one who rides, often a horse or motorcycle.

As a proper noun Rider is

{{surname|from=occupations}} More often spelled Ryder.

As nouns the difference between aider and cider

is that aider is one that assists while cider is an alcoholic, sparkling (carbonated) beverage made from fermented apples.