Some moments really become short of words. And the urge to relate our feelings and to express our emotions on those moments becomes the most difficult thing. Well, English language has umpteen words; many times we don't get words and many times meanings.
As there are lot many feelings that we human carry and so are lot many words to describe it. And among millions of emotions, there are some that are experienced so widely that even the lords of language have come up with new unique terms for them.