If you're new to Android (and even if you aren't), you'll quickly discover that there are a ton of terms to keep up with. And to that end we've worked up the official Android Central Android Dictionary. Pretty self-explanatory, eh?
Some of these may not be necessary, but I'm just throwing them out there:
LTE
Push mail
POP
IMAP
Swype
Launcher/home launcher
Long press
Capacitive vs. resistive touch
2G, 3G, EVDO, 4G
Wi-fi
HDMI
ROM
Airplane mode
Multi task
Multi touch
MEID
Firmware
Gtalk
Stock, as in stock UI
Roaming