This is the 16879th most frequent Russian word.
совместные
Joint or shared.
Here, "совместную" is used to describe a collaborative project involving multiple parties.
Мы начали новую совместную разработку программного обеспечения.
We have started a new joint software development.
Here, "совместные" refers to the collective work or joint contributions of a group of people.
Совместные усилия команды привели к успеху.
The team's joint efforts led to success.
In this case, "совместные" describes common or mutual interests shared between the parties.