noun
Refers to a person who strongly believes in and follows a particular ideology, religion, or person. Often used in political, religious, or philosophical contexts.
彼はその新興宗教の熱心な信奉者だ。
He is a devoted adherent of that new religion.
その政治家には多くの信奉
That politician has many followers.
支持者 means 'supporter' and is broader, often used for political or social support without the strong connotation of belief or devotion that 信奉者 carries.
Compound of 信奉 (しんぽう, 'belief, faith') and 者 (しゃ, 'person'). 信奉 is itself composed of 信 (しん, 'trust, believe') and 奉 (ほう, 'offer, revere').