This is the 488th most frequent Czech word.
jejich
"Their"
In this sentence, 'jejich' is a possessive pronoun indicating the ownership by 'them' related to the noun 'house'.
Jejich dům je velmi krásný.
Their house is very beautiful.
Here, 'jejich' describes whose car was seen near the store, serving as a plural possessive pronoun.
Viděl jsem jejich auto u obchodu.
I saw their car near the store.
In this context, 'jejich' refers to the efforts and approaches belonging to the group being talked about, showcasing use in plural possession.