are cathers and pagans the same thing?

Answer 1

The name you're looking for is "Cathar". And no, they are not Pagan.The Cathar's were a Christian sect that existed during the 12th and13th Centuries. They were also called the Albigenses because of there location in the town of Albi in Southern France.
One of there core beliefs was that Jesus was a spirit and not a man. In fact they believed that all matter was evil. They rejected the Old Testament, with it's wrathful God, but embraced the New testament with a more loving God, especially the Gospel of John.
There were many other reasons that the Catholic Church considered them heretics. Suppression of the Cathars began benignly in the mid-1100s. The Church realized that that wasn't going to work, so in 1208 they began a Crusade against them. The crusade lasted until the fall of the Cathar fortress at Montsegur. The Inquisition was founded in 1229 to deal with them. The last record of the Cathars by the Inquisition was in 1330. There is no record of them since.
An interesting side note. Ever since the end of the Cathars, there has been a belief that they were the keepers of the Holy Grail. It's believed that some Cathar's escaped the destruction of Montsegur with a treasure. The treasure was probably only bits of family jewelry, but a legend began from this. It grew into a belief that the escaping Cathars had the Holy Grail with them. It is most certainly not true.
To learn more check out the links below.

Answer 2

It would help if you could define what a "cather" is.

If you mean someone who's Catholic, then no, they aren't the same thing. Catholics worship the holy trinity, Mary, and thousands of saints. Pagans worship many gods and goddesses. Now, lots of things in Catholicism are very similar to Paganism, but they aren't the same thing.

Answer 3

What is a cather? I tried to look it up and all I could come up with is a design team.