Synonyms
What is flat?
Smooth, starts with an R
What is rough?
What is having a regular or even surface or consistency?
The principal method of human communication
What is language?
Smooth
What is the table is SMOOTH when I slide my hand over it?
Straight, starts with an L
What is linear?
Straight, starts with a C
What is crooked?
Straight
What is extending or moving uniformly in one direction only; without a curve or bend?
The process of receiving or giving systemic instruction.
What is education?
Straight
What is I walked in a STRAIGHT line to the bathroom?