Both are forms of juxtaposition, which carries meaning by itself. Logically, juxtaposition does not need to carry meaning, but to humans it does. For instance,

Both are forms of juxtaposition, which carries meaning by itself. Logically, juxtaposition does not need to carry meaning, but to humans it does. For instance, try comparing the next person you meet with a hyena. It's not likely to be taken as a neutral thought experiment.