This is the 7974th most frequent Russian word.
коммунальная
"Communal" or "related to shared housing or utilities."
Here, 'коммунальная' describes the type of apartment (communal), sharing facilities with other residents.
Она переехала в коммунальную квартиру.
She moved to a communal apartment.
In this sentence, 'коммунальная' refers to services related to utilities, such as water, electricity, etc.
Коммунальная служба работает круглосуточно.
The utility service operates 24/7.
Here, 'коммунальная' denotes an issue or concern that is shared or common among a community.