It is so commonly believed that actions speak for words, but in a word, sometimes, there are so many emotions that cannot be contained in the number of letters of this word... A single action in one measure can not convey the full volume and avalanche of what is inside you at such moments.
A word, like a look, can explain and prove a lot if it comes from the heart. People who are close to each other can understand a simple "I miss you" as a difficult mental experience, which can even cause physical pain.
It's also hard to argue that "their people" are able to understand each other without words, as I say - to "get through" desires, emotions and words that don't have time to be voiced.
Many words never get out, because the fear of being wrong about being "your man" is sometimes beyond your senses. Do you have a man in your life? When was the last time you told him how you felt in one word? Find an opportunity to do this in any way you can!