i dont understand most is the coplanar and the collinear can you teach me the best way to describe this two.

⚑ Flag

I wish I could edit my post!... when I say they 'share' the same plane or line, I mean they are located on it. 

the Co means to share and the linear for CoLinear means a line right? so put it toegether and you basically get a shared line so the line has shared points on the Same linecoplanar is the same thing: co means share and planar means plane so put it together and it has points on a shared plane