wellspring vs fountainhead

wellspring and fountainhead both are nouns.

Word	Noun	Adjective	Verb	Adverb
wellspring	Yes	No	No	No
fountainhead	Yes	No	No	No

As nouns, wellspring and fountainhead are synonyms defined as:

Other synonyms of wellspring include well.

wellspring (noun)	fountainhead (noun)
an abundant source	an abundant source
the source of water for a well	the source of water from which a stream arises