each, every, either
各 centers on considering items one by one within a group: each individual thing, every member, or either option when choosing between two.
各 is thought to combine 夂 (a foot arriving) with 口 (a mouth or opening), suggesting the idea of each one arriving or being distinct. The exact historical development is uncertain, but the component combination is well established.
The top 夂 looks like a foot stepping down, and the bottom 口 is an opening. Imagine stepping to each door one by one: every opening gets a visit.
For カク, picture a clerk checking each item on a list: clerk -> カク, and the clerk goes through every single one.
each; every; all
every kind; all sorts
each place; every place; various places; all parts (of the country, world, etc.)
each country; every country; various countries; all countries
all companies; each company
each (person); everyone; individual; respective
each place; various places
every station
everyone; each and every one (of you); ladies and gentlemen
each person
all parts; various parts; every department
each shop
each field; various circles
each time
each newspaper; every newspaper
each school
each floor
each day
every one; each
each state; each province; each county