I used the RC definition of the words:
For example:
“Schism:
Refusal of submission to the Supreme Pontiff, or of communion with the members of the Church subject to him.”
http://www.thesacredheart.com/dictnary.htm#S
or
https://www.catholic.org/encyclopedia/view.php?id=10569
“...Anyone becomes a schismatic who, though desiring to remain a Christian, rebels against legitimate authority, without going as far as the rejection of Christianity as a whole, which constitutes the crime of apostasy.”