scapulohumeral rhythm and humeroscapular rhythm

I have seen the terms scapulohumeral rhythm and
humeroscapular rhythm being used in articles and they appear to be the same
thing but I am not sure. I know the words are switched of course but I am
wondering if they refer to the same thing. For example, humeroscapular
rhythm refers to how the humerus moves in relation to the scapula but is
scapulohumeral rhythm the same or is it only referred to in a specific arm
movement (or in relation to the muscles) ?

Do you know if they are the same?

Thank you