persevering vs diligent

persevering and diligent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
persevering	No	Yes	No	No
diligent	No	Yes	No	No

As adjectives, persevering and diligent are synonyms defined as:

persevering and diligent: quietly and steadily persevering especially in detail or exactness

persevering (adjective)	diligent (adjective)
quietly and steadily persevering especially in detail or exactness	characterized by care and perseverance in carrying out tasks
	quietly and steadily persevering especially in detail or exactness