mix, blend, confuse
混 centers on things coming together so they are no longer separate: mixing, blending, or becoming confused. The idea is a loss of clear boundaries.
混 combines 氵 (water) with 昆, which likely contributes the sound and the idea of many things together, suggesting water mixing things into a blended mass.
Water 氵 on the left and 昆 (which looks like a crowd of suns 日 and legs 比) on the right: imagine pouring water into a crowd, everything gets mixed and blended together.
For コン, picture a con artist mixing truth and lies until you can't tell them apart: con -> コン, and the mixture confuses everyone.
disorder; chaos; confusion; mayhem
to mix; to stir; to blend
to be crowded; to be packed; to be congested; to be thronged (with)
mixing; mixture; meld
to be mixed; to be blended with; to be combined
to be mixed; to be blended with; to associate with; to mingle with; to join
congestion; crush; crowding; jam
confusion; mixing; merger
mixing; blending; adding; adulteration
chaos; confusion; disorder
existing alongside (each other); mixture; intermingling
mixed bathing
mixed race; mixed parentage
turmoil; chaos; confusion
confused fight; free-for-all; melee
(traffic) congestion; heavy traffic
mixed (e.g. team, chorus)
becoming turbid; becoming muddy; becoming cloudy; becoming opaque
to mix; to stir; to scramble; to churn
mixed voices