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Use "conceptions" in a sentence
"Your inexperience of the world, Miss Tulliver, prevents you from anticipating fully the very unjust conceptions that will probably be formed concerning your conduct, conceptions which will have a baneful effect, even in spite of known evidence to disprove them."
"His conceptions of other things and other beings _are only his conceptions_."
"For sure, we can falsify certain conceptions of the laws of physics, but we can't formally prove them (in the Popperian sense)."