These acts are age-old and are among the very primary legislations of the country. Of course, the present Government of India (GoI) has realized the need for a comprehensive labor policy and laws, and has taken up issues of merging and consolidating some of these laws, which are cogently interrelated, and repealing some very old laws and acts that are not relevant nowadays. Soon, we'll hear that such measures become a reality. For a comparison of these two acts regarding your query, it's better to search the cited links or buy the bare acts and read them for yourself to use as a reference.
Regards, Kumar S.