I love the concept of using words to weave a spell, as it fits into my campaign world that already allows spellcasters to weave spells into new spells. Your system nicely dovetails to augment this rather nicely. Two questions/comments:
1. Saxophone seem oddly specific and out of place compared to other Conjuration words that broadly encompass items. Wouldn't a Instrument be more appropriate? Likewise for Hammer, when Tool may be a better word for broader coverage. Blade should already cover Sword and even Knife, which frees up word slots for other words.
2. In the Resonance Trees, there are X used in several places. I assume that means the GM is expected to assign a value.