If you are going to teach it with the child who is 7 year old, you are going to use the word that can easily understand or comprehend them, but it really depends on the child if the child is not interested they will not easily understand it coz we all know that age is not the age that a child will give time to understand it. There is a child who are very curious but only few.
Everyone of us are fast learner, because their are internet or social media that guide us, especially bitcoin its easy to us to learn bout bitcoin. So everyone are using internet all over the world using internet because thats the way to earn money from bitcoin.