"Textural contrast" refers to the difference in texture or touch between different objects or surfaces. It means that when you touch or feel two things, they feel very different from each other. Full definition
These works are noted for their juxtaposition of different colours and jagged flashes of colour, along with their sharp textural contrasts of smoothness versus impasto. (visual-arts-cork.com)
I also sprinkled some hazelnut praline over each layer, it is very simple to make but really adds to the flavour and adds a nice textural contrast as well. (domesticgothess.com)
Generally speaking, you need shredded vegetables to create a lattice structure that will stick together, kind of like a latke, but you also need kernels for textural contrast, and starches and beans to glue the patties together. (mindbodygreen.com)