garret vs haymow

garret and haymow both are nouns.

Word	Noun	Adjective	Verb	Adverb
garret	Yes	No	No	No
haymow	Yes	No	No	No

As nouns, haymow is a hyponym of garret; that is, haymow is a word with a more specific, narrower meaning than garret:

garret: floor consisting of open space at the top of a house just below roof; often used for storage
haymow: a loft in a barn where hay is stored

Other hyponyms of garret include cockloft, hayloft, mow.

garret (noun)	haymow (noun)
floor consisting of open space at the top of a house just below roof; often used for storage	a loft in a barn where hay is stored
	a mass of hay piled up in a barn for preservation