Interesting case-study of modern ayurvedic nomenclature by Francis Zimmermann recently published on his web-site:

http://ehess.tessitures.org/malayalam/jardins-depices/galanga-gingembre-et-ajowan-1.html
http://ehess.tessitures.org/malayalam/jardins-depices/galanga-gingembre-et-ajowan-2.html
http://ehess.tessitures.org/malayalam/jardins-depices/galanga-gingembre-et-ajowan-3.html

It is in French, but as an introduction, two extracts of his Discours des remèdes au pays des épices (1989) are translated into English:
http://ehess.tessitures.org/malayalam/jardins-depices/types-of-gardens.html
http://ehess.tessitures.org/malayalam/jardins-depices/spices-a-tentative-definition.html

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Louvain-la-Neuve