vernal equinox vs spring

vernal equinox and spring both are nouns.

Word	Noun	Adjective	Verb	Adverb
vernal equinox	Yes	No	No	No
spring	Yes	No	Yes	No

vernal equinox (noun)	spring (noun)
(astronomy) the equinoctial point that lies in the constellation of Pisces	a light, self-propelled movement upwards or forwards
March 21	a metal elastic device that returns to its shape or position when pushed or pulled or pressed
	the elasticity of something that can be stretched and returns to its original length
	a point at which water issues forth
	a natural flow of ground water
	the season of growth; spring; the beginning of spring

vernal equinox (verb)	spring (verb)
	develop suddenly
	produce or disclose suddenly or unexpectedly
	spring back; spring away from an impact
	move forward by leaps and bounds
	develop into a distinctive entity