notice

[1]	note , take/make note (of) , take notice (of) , pay/give attention to , attend (to) , heed , take heed (of) , give heed to , mark , remark , mind , observe , perceive , see
[2]	mind , observe , perceive , discern , see , detect , make out , identify , recognize , (Colloq) spot
[3]	detect , observe , find , discover
[4]	mark , note
[5]	comment , remark , point out
[6]	acknowledge

[1]	observation , observance
[2]	notification , attention , awareness , consciousness , perception , observation , cognizance
[3]	regard , consideration , respect , observation , attention , note , heed
[4]	notification , poster , posting , announcement , information , placard , bill , advice , warning , card , intimation
[5]	criticism , critique , review , comment , commentary
[6]	give notice , warn , admonish , notify , announce , advise , inform