Use of "compute" and "calculate" [duplicate]

I was surprised to find that computed hasn't obviously become more common since computers became more widespread. In fact, calculated continues to be used more often...

At first I thought they might even be a rare example of true synonyms, but there are "idiomatic" contexts where only one word is used.

• does not compute sometimes means makes no sense (always in the negative).

• calculate sometimes means think, consider, believe (with no arithmetic involved).

My local dictionary offers these definitions:

compute — calculate or reckon (a figure or amount)

calculate — determine (the amount or number of something)

So yes, they are entirely interchangeable.