Amalgamate

If health departments amalgamate their data, we can better understand the picture for the whole country.

to amalgamate two races

to amalgamate one race with another

Ingratitude is indeed their four cardinal virtues compacted and amalgamated into one.

At length, the two schemes were amalgamated to form the Manchester & Birmingham, which was to pass through the Potteries and join the Grand Junction at Chebsey, a few miles north of Stafford.