Thanks for your question!
Depending on the context, "table" could be both tavolo (masculine) and tavola (feminine).
As a general rule, tavolo is the generic word for table as "piece of furniture".
You would use "tavolo" in phrases like the following ones:
- Questo tavolo è davvero grande! = This table is really big!
- Il gatto ha graffiato il tavolo. = The cat scratched the table.
If you are referring to a table that is set for a meal, you would use the word "tavola".
For instance, you would say:
- Vieni a tavola, il pranzo è pronto! = Come to the table, lunch is ready!
- Porta la caraffa in tavola, grazie! = Bring the jug to the table, thanks!
Hope this helps :)