I've heard of heart failure but why is lvf (left ventricular failure) different?

LV failure: Heart failure is a general term used to describe when the heart is not functioning well enough to maintain normal organ function. Left ventricular failure refers specifically to dysfunction of the heart's main pumping chamber, the left ventricle, which is responsible for supplying the body's organs with adequate blood flow to maintain their normal function. Symptoms differ depending on rvsl failur.

Similar: In most patients, heart failure is due to left ventricul failure (either systolic or diastolic), so the terms are rather similar.