sequential vs successive

sequential and successive both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sequential	No	Yes	No	No
successive	No	Yes	No	No

As adjectives, sequential and successive are synonyms defined as:

Other synonyms of sequential include consecutive, sequent, serial.

sequential (adjective)	successive (adjective)
in regular succession without gaps	in regular succession without gaps