The word can be used to be lazy, saying you're busy so you don't have to do another task or maybe you're busy but
it's how eeffective you're being with it.
My 'busy' schedule includes working, hanging out with friends, partying, commuting, travelling, dining out and listening to music. Obviously some of these activities are for leisure and pleasure whilst others can be considered work but as I largely love what I do it all ties up.