足

zu

foot, leg

it refers also to shin, calf, and ankle

包

bao

pack(age), wrap

跑

pao

run (away); flee

foot (zu) + wrap (bao)

when you run, your leg bends as if to hug something

戋 戈

jian / ge

small, tiny, trivial,

insignificant

dagger-axe, weapon

two 戈 stacked vertically because of their smallness

dagger-axe or halberd

践

jian

to fulfill

to trample/tread

to practice/put in action

foot (zu) + injure/small (jian)

to carry out a mission like an army stomping on the enemy with their feet and harming with spears

易

yi

(ex)change; easy

sun (ri) + do not (wu)

when the sun do not shine anymore the change appears so swiftly and easy like a cutting of a knife 

踢

ti

kick

foot (zu) + change (yi)

a good footballer knows how to change the foot to kick the ball