sequence vs ordering

sequence and ordering both are nouns.

Word	Noun	Adjective	Verb	Adverb
sequence	Yes	No	Yes	No
ordering	Yes	No	No	No

As nouns, ordering is a hypernym of sequence; that is, ordering is a word with a broader meaning than sequence:

Other hypernyms of sequence include order.

sequence (noun)	ordering (noun)
the action of following in order	the act of putting things in a sequential arrangement
film consisting of a succession of related shots that develop a given subject in a movie	logical or comprehensible arrangement of separate elements
a following of one thing after another in time
several repetitions of a melodic phrase in different keys
serial arrangement in which things follow in logical order or a recurrent pattern

sequence (verb)	ordering (verb)
arrange in a sequence
determine the order of constituents in