amalgamate
amal·gam·ate
/əˈmælgəˌmeıt/ verb , -ates, -at·ed, -at·ing [ + obj ]
formal : to unite (two or more things, such as two businesses) into one thing
They decided to amalgamate [=(more commonly) merge] the two companies.
amalgamating different styles of music
They amalgamated the hospital and/with the university.
— often used as (be) amalgamated
The hospital was amalgamated with the university.
amal·gam·ation /əˌmælgəˈmeıʃən/ noun [ singular ]
an amalgamation of different styles of music
[ noncount ]
the amalgamation of the two companies