WordNet sense 1 (earn on some commercial or business transaction; earn as salary or wages):

clear, earn, gain, make, realise, bring in, pull in, take in

WordNet sense 2 (make real or concrete; give reality or substance to):

actualize, substantiate, actualise

WordNet sense 3 (be fully aware or cognizant of):

recognize, agnise, agnize, recognise

WordNet sense 4 (perceive (an idea or situation) mentally):

see, understand