Raised Episcopalian, married an Episcopalian minister's son, so I think that I can give you insight there, but not necessarily to compare greatly.
I do know that Episcopalians don't pray through the Saints. We believe in the Saints, but we believe we can pray directly to God or through Christ, but we need no other go-betweens.
Mary is the mother of our Savior, but she is not as revered as in the Catholic church.
There is no rosary.
Marriage is a sacrament. When I was divorced, I was told that the only way I could get married in the Episcopal church again was if I wrote a letter to the archbishop to explain my divorce and ask for forgiveness. Matthew and I decided that I had already been through enough with my divorce and that a man that I didn't even know didn't need to forgive me. That was between me and God.
We do not have to go to confession. That is between the individual and God.
Episcopalians are Protestants, so Jesus is no longer on the cross. He is risen, therefore, a cross is the symbol that is used most frequently instead of the crucifex.
Episcopalian is a denomination rather than a religion. It is not exclusive in its beliefs that only Episcopalians will go to Heaven or are true Christians.
I know that there are more, but those are the ones that I know based on my Catholic friends and teaching for a few years at a Catholic high school.