Liquid nails and wood glue have similar uses, so comparing them isn't easy. The pros and cons of each are, however, unique. Wood pieces that will experience a lot of wear and tear are ideal for joining with liquid nails, which are typically stronger than wood glue. Your joint will dry faster with liquid nails, as they cure quickly. When you make mistakes with liquid nails, you can't easily undo them as easily as you can with wood glue.  As opposed to liquid nails, wood glue is easier to use. You can also break the joint by simply soaking it in water if you make a mistake.