人家【rénjia】

人家 is a spoken pronoun with three uses. The commonest means "other people", set against you or the person you're talking to – often to compare, envy or nudge.

A specific person

人家 can also stand for someone already mentioned, like 他 or 她, with a little distance or respect – "that person".

A name can follow it: 人家小王 "Xiao Wang, now" – usually to hold that person up as an example.

The speaker, said coyly

Said in a sulky or playful voice, 人家 means "me". It is affectionate and childish, and belongs between close friends or partners.

人家 or 别人

别人 is the neutral "other people", fine in writing. 人家 carries the speaker's attitude, so it doesn't suit a formal text.

• × 我们应该尊重人家的意见 (in an essay) → 我们应该尊重别人的意见

With a full first tone on 家, rénjiā is a different word, "household": 村里有十几户人家.