Collocations for concept - noun

basic, simple | broad, general, overall, wider
‘Mental handicap’ should be replaced with the broader concept of ‘learning difficulties’.

entire, whole
The whole concept of responsibility was alien to him.

central, core, essential, fundamental, important, key | clear, precise | ambiguous, elusive, nebulous, vague
The concept of ‘adequate medical care’ is too vague.

complex, difficult, sophisticated | abstract, intellectual, theoretical | alien, bizarre | underlying | useful | modern, new, novel | old-fashioned, traditional | business, design, economic, historical, legal, mathematical, political, psychological, religious, scientific

have
Teachers should have a clear concept of what a multiracial society is.

grasp, understand
She finds it difficult to grasp abstract concepts.

define, formulate, frame
the need to create new words to frame new concepts

introduce | develop

~ of
He formulated the concept of imaginary time.