Tongue and groove engineered hardwood is characterized by each plank having a tongue at one end and a groove at the other. This allows for each plank to snuggly fit into the one laid before it. These hardwood planks are versatile and can be installed just about anywhere in your home. They are made from genuine wood. The smoke shade is entirely unique, as it showcases an alluring contrast between light and dark shades of brown, making it really stand out.