Well, I thought I had just explained how it can be both prayer and worship. It's a matter of the contents of the wording and perhaps the behavior that accompanies it (if it does).
Of course there are prayers that are NOT worship. A prayer that is actually a request for intercession I would not call worship, even though I consider the practice unScriptural and superfluous. The usual response we hear from folks who favor prayer to the saints is that it's just like asking your neighbor to help you, to pray for you, etc. That's a false analogy, but that kind of prayer is indeed what some prayers are like.
OTOH, with those that have wording like we find in this hymn, we are dealing with professions of belief in the God-like powers or authority of the one petitioned. That's worship. That's not merely a request for intercession.