The best replacement for key chain is keychain.

The best alternatives to key chain are rated as following:
★★★★★  keychain

Your alternative for key chain is not listed? Suggest!
Speaking about key chain, one probably shouldn't forget about credit card holder.

Other search terms related to key chain and their ratings are:
★★★★★ credit card holder
You have in mind a companion for key chain and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of key chain in all years. Click on graph for more.
key chain
keychain