This is the 15857th most frequent Polish word.
tanecznych
"Tanecznych" means "dance-related" or "pertaining to dancing."
Here, "tanecznych" functions as an adjective related to "competitions," meaning 'dance' competitions.
Uczestniczyłem w zawodach tanecznych.
I participated in dance competitions.
"Taneczne" describes "układy" ('routines'), indicating that they pertain to dance.
Te układy taneczne są bardzo skomplikowane.
These dance routines are very complex.
The word "taneczne" characterizes "zajęcia" ('classes'), showing their focus on dancing activities.