I came accross the word innovatory today.
Few terrorist tactics or targets are ever entirely original, but a combination of different elements can often be innovatory. [The Guardian]
I checked ODO and it seems to have the same menaing as innovative:
innovative
(Of a product, idea, etc.) featuring new methods; advanced and original: [ODO]
Innovatory is listed as the adjectival form of innovate:
innovate
Make changes in something established, especially by introducing new methods, ideas, or products [ODO]
Merriam Webster has similar definitions.
Google Ngram shows innovative to be far more popular than innovatory:
My question: is there a situation where one would be preferable to the other, or are they completely interchangeable?
