(4)For the purposes of this section,––(a)"assets" means land, building, machinery, plant, shares, securities, fixed deposits in banks, and virtual digital asset, to the extent to which any of the said assets do not form part of the stock-in-trade of the business of the assessee;(b)the modes of creating a charge on or parting with the possession of such assets shall include sale, mortgage, gift, exchange or any other mode of transfer.