I own several 4 letter domains that "make sense", and some that have a clever twist that makes them valuable. I like them, and don't care if some other domain speculator thinks they aren't worth the reg fee. Ultimately, you need to approach the end users.
Sometimes your marketing approach & display makes all the difference.
Ad
EZ.com instead of Adez.com might make it more obvious to the reader what your domain name means. I didn't get it at first either.
For example: one of my 4-letter domain names is xnip.com, but what does it mean? Take a look - click
here (might take a few seconds to load). A visual can make all the difference.
Another example: I also own imtg.com, but it looks better as iMTG.com, and looks even better as a logo - click
here. Sometimes to the uninformed, a domain name can seem valueless, but to the right buyer in the right industry, it can be priceless. MTG is the dictionary abbreviation for both "meeting" and "mortgage", so it definitely has value for online mortage brokers and internet meeting service providers.
Best Regards.