What does "knowing" a word mean? Is it just recognizing that the word is a valid word? I am skeptical that 80% of men recognize that "boson" is a word, but onl

What does "knowing" a word mean? Is it just recognizing that the word is a valid word? I am skeptical that 80% of men recognize that "boson" is a word, but only about 50% of women could put together "shemale" from context clues.