Java is easy - named after the coffee beans of the coffee they used to drink...
CVS (noticed already mentioned by a sibling comment) is just an abbreviation.
Python - well Monty Python
Yes, I am simply highlighting that programmers have not used descriptive names consistently... well, ever (reinforcing the point the GP made).
The entire premise of the OP is simply wrong.
Java was originally called Oak but its creator because he could see an oak from his office, but marketing people at Sun thought Java would be more catchy. Yes it's named after coffee beans, but it has no relation whatsoever to the language or the way it was created, it's just a marketing name.