olemus
Wiktionary:
verb
1. to give part of what one has to somebody else to use or consume
2. to have or use in common
to share a shelter with another
They share a language.
3. to divide and distribute

shared household -- ühine majapidamine
shared ownership -- ühine omand
shared property -- ühine vara
share the possession -- ühiselt valdama
share the responsibility -- vastutust jagama