家庭 (katei) means “family, home” | MotiTan Japanese Dictionary

More examples

毎日家庭で料理をします。mai nichi ka tei de ryō ri o shi ma su

I cook at home every day.

子どもたちは家庭で安心して過ごしています。ko do mo ta chi wa ka tei de an shin shi te su go shi te i ma su

The children feel safe at home.

Describes the family unit and the home life shared by its members.

家族kazoku: People connected as members of the same family.
家ie: A house or home where people live, focusing on the physical place.

家族がともに暮らし、日常生活を営むまとまりやその場。ka zoku ga to mo ni ku ra shi nichi jō sei katsu o itona mu ma to ma ri ya so no ba

家庭 (katei) combines 家 (ka, "house") and 庭 (tei, "garden"), referring to the home and family life within it.

In everyday Japanese, 家庭 (katei) often means family life or a household, while 家 (ie) more directly names a house or home.