For example, if you're trying to figure out whether something is 'moving', you would define the term in such a way that it could apply to planets or animals or other things/systems. If you define 'motion' = 'humans putting one leg in front of another', then of course non-human animals or anything else couldn't move. But, that definition is too restrictive. If you're trying to say that animals can't move, then provide a more abstract definition of 'motion' (e.g. 'change in location') and then you will see animals and many other things start moving.
Here is a video with a good explanation of how a lack of an abstract definition results in confusion:
https://youtu.be/_Wvv-bt9SzI?t=11s