As nouns the difference between egoism and perfectionism
is that egoism
is while perfectionism
is a dislike for anything less than perfection.
The tendency to think selfishly with exclusive self-interest in mind.
(ethics) The belief that moral behavior should be directed toward one's self-interest only.
(nonstandard, by confusion of the similar words) egotism
* (tendency to think of self) selfishness
* (tendency to think of self) altruism
* misanthropy (hatred of human race)
A dislike for anything less than perfection
A belief that spiritual perfection may be achieved during life, or that it should be striven for