shielder vs defender

shielder and defender both are nouns.

Word	Noun	Adjective	Verb	Adverb
shielder	Yes	No	No	No
defender	Yes	No	No	No

As nouns, shielder and defender are synonyms defined as:

Other synonyms of shielder include guardian, protector.

shielder (noun)	defender (noun)
a person who cares for persons or property	a person who cares for persons or property
	a fighter who holds out against attack