pride
[ prīd ]
satisfaction with self: the happy satisfied feeling somebody experiences when having or achieving something special that other people admire
proper sense of own value: the correct level of respect for the importance and value of your personal character, life, efforts, or achievements
feeling of superiority: a haughty attitude shown by somebody who believes, often unjustifiably, that he or she is better than others
Synonyms: arrogance, conceit, smugness, self-importance, egotism, vanity, immodesty, superiority
e·go
[ gō ]
self-esteem: somebody's idea of his or her own importance or worth, usually of an appropriate level
inflated opinion of self: an exaggerated sense of self-importance and a feeling of superiority to other people
part of mind containing consciousness: in Freudian psychology, one of three main divisions of the mind, containing consciousness and memory and involved with control, planning, and conforming to reality
Synonyms: personality, character, self, self-image, self-worth, self-esteem, individuality
so yeah i say they are the synonym