用 (Kanji for utilize)

literally 用 means "utilize", but it has a more sinister meaning: 'only'. As in, men only or Japanese only.

Onyomi

YOU	If you want to communicate between Alpine peaks, you should utilize YODELING.

George Michael utilized a blowdryer to dry out his moustache.

もち＊いる

To use. (More formal/scientific than つかう） As in, "Please use this pencil to complete the test. NP
★★★☆☆

用事(ようじ)	errands ★★★★★ 用 (utilize) + 事 (action/ incident) = 用事 (errands) errands, chores, stuff to do. "I'd love to come to see your performance piece, buttttt I've got 用事。”
XXX 用(よう)	only for xxx's use ★★★★☆ SUF SUFFIX meaning, only XXX can use this water fountain.
用意(ようい) する	get set！！ ★★★☆☆ 用 (utilize) + 意 (meaning) = 用意 (get set！！) 'get set' - basically it means the same as 準備 , but the nuance is a bit more abstract. : If you’re getting prepared mentally , that’s 準備(じゅんび） . If you’re arranging stuff over the phone, use 用意 . The ‘Get set!’ in ‘Get ready! Get set! Go!’ is 用意 .
利用(りよう) する	utilize ★★☆☆☆ 利 (handy) + 用 (utilize) = 利用 (utilize) to utilize. Usually used in the sense of, 'Only students/Japanese/Scientologists can utilize this swimming pool.'

discreet, prudent
弁える慎重思慮深い用心

errands
用件用事事務

idiom, expression
表現慣用句格言ことわざ方言 xxx弁

prepare
手配用意準備備える xxxしておく覚悟構える

smooth
巧みな巧み器用な巧妙な素早い機敏俊敏な

use
使う用いる遣