lamps and bulbs and fixtures and luminaries ?

maybe it is just me but this sort of french way of describing lighting makes me dyslexic. can anyone explain it for just regular american english? a “luminaire” is what i would call a light or a light fixture? also a “fixture” is a light fixture? a “lamp” is what i would call a bulb (?)? “lamp lumens” is the individual bulb output in a light fixture? - then “lumens” is an overall measure of light and “foot-candles if basically lumens per square foot? any other terms? a “fixture