I was at an Extraordinary Form Mass recently, the Parish Priest had a preface on the service booklet saying the EF is "worship", the OF is "liturgy".
Worship literally means "worth-ship". Giving worth to something, from the Anglo-Saxon, "worthscripe".
It denotes an act of reverence or respect from an inferior to a superior. It is essentially about a movement "up".
Liturgy from the Greek λειτουργία (leitourgia) meaning a "public work".
Denote some corporate act we take part in. There is no sense of something "higher" or beyond. λειτουργία could exist apart from God. It is about "horizontalism", an act of community.
In part these distinctions actually do signify the difference between the two forms of the Roman Rite. Emphasising "λειτουργία", when speaking when speaking about the Ordinary Form tends to rob it of the vertical dimension, its God centredness.
Over the last year I have been celebrating the EF, rather strictly. Its one striking weakness seems to be [at low Mass] the lack of contact between nave and sanctuary, priest and people, the server is the horizontal dimension.
The weakness of the OF, is that it can easily be more or less all horizontal.
Words have meaning and form our thinking, maybe we need to re-examine the words we use.