utilize, business, service, use, employ
用 centers on putting something into active service: using, employing, or utilizing it. The business and service senses are natural extensions of this idea of practical application.
use; application; employment; utilization; utilisation
business; task; errand; engagement
use; utilization; utilisation; application
preparation; arrangements; provision; getting ready; laying out (e.g. a meal)
(one's) exclusive use; private use; personal use
use; adoption; acceptance
confidence; trust; faith; reputation
making use of; application; practical use; effective management (e.g. of funds)
to use; to make use of; to utilize; to utilise
application (of a rule, law, method, etc.)
practical use; application; making good use of; putting to good use; capitalizing on
cost; expense
employment; hire
action; operation; process; agency; effect; function
quotation; citation; reference
practical use; utility
wearing (e.g. a uniform, seat belt, helmet); having on
term; terminology
(practical) application; putting to practical use
use; service; purpose
favorite; favourite; habitually used
articles; supplies (e.g. office supplies); things (for); utensils; goods; equipment
side effect; adverse reaction
business; things to do; engagement; errand; affairs
用 is thought to originate from a pictograph of a bucket or container used for practical purposes, later extended to the abstract idea of use and employment.
The shape 用 looks like a sturdy bucket with a handle, ready to be used for carrying water or tools. Think of it as the kanji for putting things to work.
For ヨウ, imagine a busy office worker yelling 'Yo!' as they use the bucket to carry documents: Yo! -> ヨウ, and the bucket is always in use.