'Close contact' VS 'Social contact' (VIC)

You are a close contact if:

You live with someone who has COVID-19
or
You stayed the night at someone's house, and that person has COVID-19
or
You spent more than 4 hours indoors in a house with a person who has COVID-19

You are a social contact if you were in contact with someone with COVID-19 at:

school
or
work
or
a social event
or
an event
or
childcare