こと

thing; matter

incident; occurrence; event; something serious; trouble; crisis

circumstances; situation; state of affairs

work; business; affair

after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to

nominalizing suffix

pretending to ...; playing make-believe ...

alias; also known as; otherwise known as; or

necessity; need

you should ...; I advise that you ...; it's important to ...