haying time vs haying

haying time and haying both are nouns.

Word	Noun	Adjective	Verb	Adverb
haying time	Yes	No	No	No
haying	Yes	No	No	No

As nouns, haying time and haying are synonyms defined as:

haying time and haying: the season for cutting and drying and storing grass as fodder

haying time (noun)	haying (noun)
the season for cutting and drying and storing grass as fodder	the season for cutting and drying and storing grass as fodder
	the harvesting of hay