Collocations for core - noun

hollow
Each fibre has a hollow core trapping still air and aiding warmth. | (figurative) There was a hollow core of sadness inside me.

solid | copper, iron, etc. | reactor
nuclear reactor cores

central, essential, inner, innermost, very
This is seen as the central core of the government''s policy. | A new spirit welled up from the very core of the nation.

common
a common core of shared understanding about law and government

hard
A hard core of supporters, mostly teenage girls, gathered at the airport to see the star arrive.

emotional
the emotional core of her music

form, make up
These ideas formed the core of his philosophy.

get to
We want to get to the core of the problem.

activity, area, course, curriculum, discipline, module, programme, skill, subject
the core area of management studies Students study five core subjects.

component, element, group | business, service
We need to stop this expansion and concentrate on the core business.

belief, value | vocabulary

at sth''s ~
At the core of our convictions is belief in individual liberty.

to the ~
She was shaken to the core by the news. | He''s a politician to the core (= in all his attitudes, beliefs and actions).