The only way to roller skate is to use inline skates!
Roller skate? I have not heard anything about roller skate
Yes they are a type of roller skate. Instead of having 2 front and 2 real wheels, inline skates have wheels arranged in a single line
Wow, is it like a vehicle or what please? Ireallly need to know this.
They are also widely known as "rollerblades". This name became popular in the last 1980's
Is it like a travelling vehicle or what? I want to know the use please.
no they are a form of roller skates. 
Wow, this is serious. Which I have to fill to have access to some where?