This is the 8301st most frequent Japanese word.
張り合う
To compete or vie with.
Here, '張り合う' is used to describe the action of competing or contesting in a friendly manner.
彼は友人とスポーツで張り合うことを楽しんでいる。
He enjoys competing with his friends in sports.
In this usage, '張り合う' represents rivalry or the act of striving to outdo each other professionally.
あの二人は仕事で常に張り合っている。
Those two are always vying with each other at work.
It illustrates '張り合う' in the context of a fierce competition or intense striving between entities.