Worth can be used as a noun or in the compound verb to be worth. As a noun means: value or merit, for example: "The worth of that house has been reduced by the construction noise" or "This article about women's rights has a lot of worth". In the compound verb "to be worth" that means equal in value to... for example "it's worth a lot of money" Worthy is an adjetive that means deserving or valuable. For instance: "The new CEO is a worthy successor to the man who ran our company so successfully for so many years." or " Saving the orangutans from extinction is a worthy cause" Source: wordreference.com

worth = valued at worthy = (i) deserving (ii) upright, honest, trusted (now usually ironic) The car is worth $5000. He is a worthy candidate.

(1) worth to be worth £10 = to have a value of £10 e.g. This pen is worth £10 = This pen has a value of £10 (2) worthy something + to be worthy of + e.g. praise, contempt, consideration = something + to deserve e.g. praise etc = something + to be worth + -ing e.g. considering e.g. His CV is worthy of consideration = His CV deserves consideration = His CV is worth considering