team spirit vs esprit de corps

team spirit and esprit de corps both are nouns.

Word	Noun	Adjective	Verb	Adverb
team spirit	Yes	No	No	No
esprit de corps	Yes	No	No	No

As nouns, team spirit and esprit de corps are synonyms defined as:

team spirit and esprit de corps: the spirit of a group that makes the members want the group to succeed

Other synonyms of team spirit include morale.

team spirit (noun)	esprit de corps (noun)
the spirit of a group that makes the members want the group to succeed	the spirit of a group that makes the members want the group to succeed