social distance

Short definition from Wiktionary

Noun

1. 1
   The distance between different social groups, e.g. in terms of class, ethnicity, gender-identity, sexual-identity, etc.
2. 2
   An appropriate distance for interactions among acquaintances during epidemics.

Verb

1. 1
   To maintain a certain distance between at least two people to contain the spread of an infectious disease.