With each language in the world there seems to be a set number of words, some

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With each language in the world there seems to be a set number of words, some have more it seems and some have less. My question is that in a language that has less words, is it limited in it's ability to conceptualize and describe and thus understand less about it's reality around it, or is it's simplistic view what gives a clearer view of things? Follow up: If you can't define a word without using another word, wouldn't words be subjective?