120=diameter. 80=radius. 80 what i've no idea, maybe furlongs?
Any way without searching for pictures. The 140 is about the size of a golf ball(isn't it?) and the 211/212 are like a common 60 watt household bulb. I'd guess that the Lucky lamp is closer in diameter to the 2xx's.
The diameter will make a difference in evenness across the print. It may not be noticeable because your'e making smallish prints.