Guacamole is made of avocados, but the word 'guacamole' itself contains 'avocado' too.

Via Spanish, 'guacamole' stems from Classical Nahuatl 'āhuacamōlli', literally "avocado sauce".

Its first part, 'āhuaca-', is the stem of 'āhuacatl', which became 'avocado' in English.

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