diligent vs persevering

diligent and persevering both are adjectives.

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

As adjectives, diligent and persevering are synonyms defined as:

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

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