Jacob 1:14 But I, Jacob, shall not hereafter
distinguish them by these names, but I shall call them Lamanites, that seek to destroy the people of Nephi; and those who are friendly to Nephi, I shall call Nephites, or the people of Nephi, according to the reigns of the kings.
Helaman 2:146 And it came to pass that they did have their signs, yea, their secret signs, and their secret words; and this that they might
distinguish a brother who had entered into the covenant, that whatsoever wickedness his brother should do, he should not be injured by his brother, nor by those who did belong to his band, who had taken this covenant;
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