daylight saving vs daylight savings

daylight saving and daylight savings both are nouns.

Word	Noun	Adjective	Verb	Adverb
daylight saving	Yes	No	No	No
daylight savings	Yes	No	No	No

As nouns, daylight saving and daylight savings are synonyms defined as:

daylight saving and daylight savings: time during which clocks are set one hour ahead of local standard time; widely adopted during summer to provide extra daylight in the evenings

Other synonyms of daylight saving include daylight-saving time, daylight-savings time.

daylight saving (noun)	daylight savings (noun)
time during which clocks are set one hour ahead of local standard time; widely adopted during summer to provide extra daylight in the evenings	time during which clocks are set one hour ahead of local standard time; widely adopted during summer to provide extra daylight in the evenings