behind vs say

So as to come after someone or something in position, distance, advancement, ranking, time, etc. 

Behind the scenes in a theatre; backstage. 

At or in the rear or back part of something. 

So as to be still in place after someone or something has departed or ceased to exist. 

In a rearward direction. 

Backward in time or order of succession; past. 

In the Eton College field game, any of a group of players consisting of two "shorts" (who try to kick the ball over the bully) and a "long" (who defends the goal). 

The rear, back-end. 

The buttocks, bottom, butt. 

A one-point score. 

The catcher. 

As a result or consequence of. 

Responsible for, being the creator or controller of. 

After in developmental progress, score, grade, etc.; inferior to. 

After in time. 

In the past, from the viewpoint of. 

Concealed by (something serving as a facade or disguise). 

After in physical progress or distance. 

In support of. 

Underlying, being the reason for or explanation of. 

At or to the back or far side of. 

For example; let us assume. 

Pick a color you think they'd like, say, peach. 

Used to gain someone's attention before making an inquiry or suggestion 

Suppose, assume; used to mark an example, supposition or hypothesis. 

To tell, either verbally or in writing. 

To indicate in a written form. 

To have a common expression; used in singular passive voice or plural active voice to indicate a rumor or well-known fact. 

To recite. 

To pronounce. 

To try; to assay. 

To bet as a wager on an outcome; by extension, used to express belief in an outcome by the speaker. 

To speak; to express an opinion; to make answer; to reply.