Be cognizant of and Keep an eye on

Keep an eye on and be cognizant of are semantically related. In some cases you can use "Keep an eye on" instead a verb phrase "Be cognizant of".

Keep an eye on verb - Follow with the eyes or the mind.

Be cognizant of and keep an eye on are semantically related. Sometimes you can use "Be cognizant of" instead a verb "Keep an eye on".