Meaning: a mouth
口調（クチョウ）: a tone of voice; a manner of talking
口論（コウロン）: a dispute, a quarrel
河口（カコウ）: the mouth of a river
人口（ジンコウ）: a population
口（くち）: a mouth
口火（くちび）: a fuse; a train; a pilot light
悪口（わるくち）: abuse, abusive language
入口（いりぐち）: an entrance
出口（でぐち）: an exit
#口 is a pictograph for a mouth and this makes its own radical.
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