Content creation

Hi!
I use Vimeo Pro for embedding videos. Somewhere on the forum I read that H5P does not support the iframe codes for embedding Vimeo videos. Therefore I use the codes on the page https://vimeo.com/###/settings/file, 'Access your video files'..

is there an easy way to have a word in a text (within a course presentation) be clickable, with it's defintion popping up when use clicks on it? 

Is it possible to use H5P content  as an HTML widget in iBooks Author?  If not, what prevents this?