23-inch led tv vs 23-inch led monitor

[progx]

Is there any differences in those sizes? I'm looking to dual for my new 21.5" iMac 2012 and was curious if 24 inches or lower in the HDTV works just as well as a monitor of similar size.

I'm looking to use it as a utility and entertainment purposes. Does anyone have a recommendation?

These are the TVs I'm currently looking at:
Toshiba 23" LED TV
LG 23" LED

Monitors:
LG 23" Monitor
Samsung 23" LED Monitor

Again, any suggestions would be awesome! I'd be looking to connect it via HDMI, or if a monitor, DVI?

 

[NewbieCanada]

if it's for entertainment (videos), a TV over HDMI will do just fine.