okay so for shitz'n'gigglez
Aftre having gone through quite some health-issues up to almost loosing my life my thoughts on those "terms" are, the following (i have a few more):
health = being able to accomplish your every day tasks without too much restrictions or no issues at all. (this includes also the health of the mind! which people often tend to forget)
fitness = being able to accomplish a bit more advanced tasks such as an occasional jogg, some more advanced endurance tasks, and some exercising.
now we leave the realm of 'regular' average people...and come to the following terms:
strong = being able to perform with more strength than the average human, in terms of workload, bodycontrol, weight-load, load for the central nervous system, and also ,more challenging endurance tasks. And - which seems mostly to come along naturally - a strong mind as well.
powerfull = being explosive and capable of bringing up a lot force in a short explosive burst. This can be from sprinting to power sports as well as power lifting.
BMI = imho doesn't stand for quality of life nor health, you can have a healthy range BMI but be disabled or ill, have injuires, or be badly out of shape as well. (of course a higher BMI might be a sign for obesity which is lowering quality of life as well, but again it's not really an all over "measurement" of health nor fitness)
good Bloodwork = at least so i learned in my life, unfortunately, is also often not a sign for actually being healthy or fit. We can still be injured, disabled, have a lowered life quality. And there also are things that keep being overseen or do not show up in the blood at all.
To sum this all up... i think the highest value in life is a ) being alive and b) being healthy. Everything else is a plus on top of that =)