This is the 775th most frequent Japanese word.
使える
"Usable" or "can be used."
Indicates the restroom availability for use by patrons.
営業中なら、トイレが自由に使える。
When the store is open, the restroom is freely usable.
Shows adaptability and utility of someone's skills to different circumstances.
彼の能力はどの場面でも使える。
His skills are applicable in any situation.
Used to express the app's functionality and beneficial usability.