ADJ. 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
VERB + CONCEPT 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
PREP. ~ of He formulated the concept of imaginary time.