Choosing a unique sounding word has another added advantage, which is that even if someone at a later stage tries to register the same name or a similar sounding name as you have registered, at that point in time you can file an objection against that brand, stating that at the time you applied for the brand, there did not exist any such brand name all over India.
You could show that you have already been doing business with that name; you can show the proof of your product here, packaged with your marketing materials, your website invoices, etc., to support your statement.