You can use Liquid Nails to glue timber, but you might be better off with PVA wood glue in some circumstances. If you could show us the areas you'd like to use the glue on, we can advise the correct choice. You'd often use Liquid Nails over PVA where the timber surfaces are not meeting perfectly together, and a void must be filled. PVA is used where neat joints are required, and the glue can penetrate the timber.
I'm looking forward to hearing more about the application areas and providing further assistance.