杀戮 (shālù): massacre

Meanings

Both characters mean 'kill' — together they emphasize large-scale or brutal killing

Zhànzhēng dàilái le wújìn de shālù.

The war brought endless slaughter.

Wǒmen bìxū tíngzhǐ zhè chǎng shālù.

We must stop this massacre.

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杀戮 is a formal/literary word for killing on a large scale. In everyday speech, 杀 is more common for general killing.

杀 shā

戮 lù