reuse

user; consumer / employer

employee / servant

something that has gone unused

(grammar) a case particle (non-free particle following an uninflected word, with grammatical functions akin to noun or pronoun cases in other languages)

adverbial particle

sentence-ending particle

binding particle, linking particle

お目々, 御目々: (childish) eye

to regard, to look upon / (uncommon) to see, to look