Westernization refers to blind immitation of culture of west. However, modernization is a wider concept and it refers to progressive transformation of social, political, economic and attitudinal aspect of life.
Westernization is restricted to speech, clothing food habbits, music preferences whereas modernization is a fundamental et concept which brings changes in altitude, behavior, enfea etc. Ex- industrialization, urbanisation, ederation system.
Westernization is an elite concept as it is restricted to middle class and above. However modernization is a mass affair and it penerates to all level of society.
The process values of modernization can co-exist with traditional values. Westernization per say is not wrong however restricting only to westernization in the name of modernization is wrong.