"Puts side" can be replaced with a number of synonyms depending on the context of the sentence. If you are referring to placing objects next to each other, you can use words like "aligns", "arranges", or "positions". Alternatively, if you are referring to someone choosing a side in a debate or argument, you can use words like "takes sides", "supports", or "chooses a stance". Other synonyms can include "sets aside", "places next to", "lays parallel", or "places adjacent". It's important to consider the context and choose the most appropriate synonym for the intended meaning.