What are the key differences between "solid modernity" and "liquid modernity" as described by Zygmunt Bauman in Liquid Modernity?

Zygmunt
Bauman was born in 1927 in Poland to a Jewish-Polish family. Throughout his life, he was twice
forced to move to a different country for his religious views, once to the USSR and once to
Israel.

Following military service, Bauman went back to school, began to
lecture at universities, and eventually became a prominent social theorist.

His work Liquid Modernity was groundbreaking, as it reframed the
way in which people think about modernity and postmodernity. Previously, modernity was treated
as a sociological era governed through an adherence to rules and order. When postmodern
thought...