No. Chum is a synonym of friend. Chump is a mild insult
Synonym
Friend, partner, ally.
A synonym for confidant is "trusted friend" or "close companion."
Befriend
There are many words that can describe a friend. Companion is one of the synonym of a friend.
Synonyms for friend include buddy, pal, comrade, or chum.
pal,Boy, is my pal swell.
buddy, friend, aquaintence, etc.
colleague, companion, friend, associate
buddy
Friend me on xbox 360 SilentDagger715