Explain ......it

REDEMPTION means the repayment of a debt security or preferred shares.

REDEEMABLE is mentioned to specify the nature preference shares that is issued with the intention to redeem(repay) after specified period

IRREDEEMABLE is mentioned when the debtures or preference shares that is issued without having intention to redeem(repay) to the holders of such securities

as per companies act no preference shares should be issued as irredeemable preference shares.

Means preference shares are to be redeemed after some specified period