Contact -- plural or singular?

Hiya.

I am volunteering on an open source computer application project, helping out with documentation.

We are working on a section of the program that handles lists of persons, with their names, addresses, etc.

A small controversy has arisen: You -- and I -- might know this function as a "contact manager." One member of the team insists that this should be a "contacts manager."

For example, his proposed wording is for the menu is:

Contacts
-> Manage contacts
-> Contacts categories

I agree with two-thirds of his suggestion; it's the last line that has me stymied (I think it should be "Contact categories").

Doesn't "contact" take on a plural singularity in some instances?

Muddying the water a bit is that I believe my nemisis is from the UK, Australia or New Zealand and I have a sneaky feeling that American English does treat "contact" as a singular plurality, while British English does not.

Any insights would be appreciated.

Thanks.

\dmc

Not a correction; an alternative:

Contacts
-> Manage
-> Categories

(Cf. the Tables menu in Word: it doesn't repeat the word 'table' beside every option.)

MrP

Thanks for these thoughts ... it turns out this fellow's first language is not English, but French. I suspect there is something in the Romance languages that keeps the double-plural.

\dmc

It's no diffferent to working in a restaurant as a clearer of tables - the table clearer.