Meaning of こんせん in Japanese

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Definition of こんせん

こんせん(konsen) 【混戦】

(n) free-for-all fight
そこに赤井選手も加わり、ゴール前は混戦模様となった。
There Akai joins them and it becomes a free-for-all in front of the finish line.

こんせん(konsen) 【混線】

(n, vs) crossed wires or lines (of communication); confusion
雨くらいで電話が混線してたら日本なんて大変ですよね。
If rain was enough to get phone-lines crossed then Japan would be in a right mess, wouldn't it?

ひんこんせん(hinkonsen) 【貧困線】