A "regular" chicken is called a standard or large fowl (LF). The regular chicken is much larger than the "banty" or bantam. A Silkie is just a particular breed of chicken - it doesn't have the normal feathers like most chickens. They are one of the best broodies and are very sweet.
a regular chicken is "regular sized" usually around 6-8 pounds, give or take... a "banty" otherwise known as a "bantam" is a smaller sized chicken. these bantams are breeds. certain breeds like Australorps, have a smaller counterpart breed known as a bantam. if i had a normal sized australorp, i would just say that i had an australorp. if i said that i had a bantam australorp, then you would know i had a "mini" breed of the big kind. bantams are like 1-4 pounds. there are some breeds like Sebrights, that are considered bantams and have no larger counterpart. there is no "standard" sized sebright. they are all "bantams"
Silkies are a breed of chicken. their feathers are like silky fur... google search "silkie chickens"