Here are some examples of words with the root "syn":
* Synonymous: Having the same meaning (together in meaning)
* Synthesis: The combination of different parts to form a whole (putting things together)
* Synchronization: The act of coordinating events to occur at the same time (being together in time)
* Synonym: A word that has the same meaning as another word (together in meaning)
* Symphony: A musical composition for an orchestra (playing together)
So, whenever you see "syn" in a word, it usually signifies something related to coming together, being joined, or sharing a common characteristic.