Uso Correcto: Palabras Clave y Copias Piratas
Así Se Dice
[{'start': '0.000', 'end': '9.840', 'text': 'Is it "keywords" or "keywords"?  And "pirated copies" or "pirated copies"?'}, {'start': '9.840', 'end': '13.040', 'text': 'The truth is, both ways are correct.'}, {'start': '13.040', 'end': '18.520', 'text': 'When the second noun functions as an adjective, it may or may not have a plural form.'}, {'start': '18.520', 'end': '24.760', 'text': 'For example, "keywords" uses "key" as a noun, without a plural.'}, {'start': '24.760', 'end': '30.160', 'text': 'But in "keywords", "keys" acts as an adjective and has a plural form.'}, {'start': '30.160', 'end': '34.120', 'text': 'The same goes for "pirated copies" and "bootleg copies."'}, {'start': '34.120', 'end': '36.840', 'text': 'So, you can use both!'}, {'start': '36.840', 'end': '40.600', 'text': 'Just remember what function the second word serves.'}, {'start': '40.600', 'end': '42.040', 'text': 'Language always surprises us!'}]