Cardiac failure and Cardiac insufficiency

Cardiac insufficiency and cardiac failure are semantically related in heart failure topic. In some cases you can use "Cardiac insufficiency" instead a noun phrase "Cardiac failure", when it comes to topics like congestive heart failure.

Cardiac insufficiency noun - Inadequate blood flow to the heart muscles; can cause angina pectoris.

Cardiac failure and cardiac insufficiency are semantically related in heart failure topic. You can use "Cardiac failure" instead a noun phrase "Cardiac insufficiency", if it concerns topics such as congestive heart failure.