Every word carries meaning or meanings, pronunciation or pronunciations, and emotional weights for each variety of those permutations. I believe the study of this is called advertising.
Swear words carry high emotional weight. If they didn't they wouldn't be swear words. Normal words such as crucified, the normal Roman way of killing recalcitrant slaves, can also carry enormous weight and yet the word crucified is not a swear word in any context. The normal way the English killed robbers, hanged, also carries a lot of weight but less because there is no morality attached to murder by hanging while there is morality attached to murder by crucification. Good morality from Roman perspective and bad morality from Christian perspective.
Then, once you have an emotional weight for each word (and the emotional weight of phrases and phrasing takes this into very permuted territory) the emotional use requires understanding to apply. That understanding is required and is why Watson failed.
Solutions to this knot in the rope, the requirement for machines to have emotions, do exist in theory but none is in any way close to application.