The phrase "ambiguous concept" is correct and usable in written English.
It can be used when discussing ideas or terms that are unclear or open to multiple interpretations.
Example: "The term 'freedom' can often be seen as an ambiguous concept, as it varies greatly in meaning depending on cultural and personal perspectives."
Alternatives: "vague idea" or "unclear notion".
"In fashion, quality is sometimes an ambiguous concept," he said.
But solvency is an ambiguous concept in a crisis.
The burden of proof is a manifold and somewhat ambiguous concept in the law of evidence.
While arrangements based on volume are relatively straightforward (five colonoscopies earn more than four), value is a more ambiguous concept.
"Control in the History of Computing: Making an Ambiguous Concept Useful .IEEE Annals of the History of Computing.
The Texas courts have since refined the notion of "tortious interference," an ambiguous concept that generally means wrongful meddling and was Penzoil's chief legal argument against Texaco.
Executive privilege is one of the most ambiguous concepts in constitutional law.
The doctrine of executive privilege, which the Bush White House invoked in trying to keep Condoleezza Rice from testifying in public session before the terrorism commission, is widely viewed as one of the most ambiguous concepts in constitutional law.
Executive privilege, which Mr. Bush and other presidents have cited as a justification for not answering questions from Congress, is one of the most ambiguous concepts in constitutional law.
In some international organizations and in many countries there have been obvious problems such as an unclear goal, ambiguous concepts, lack of theoretical framework and overlapping extensions in the classification of heritage, particularly in the classification of cultural heritage, and newly proposed typological classifications have even worsened the existing contradictions.
It would imply that our notions of explanation and causation are ambiguous concepts.
