If you take a single hair in between your fingers and you don't feel anything, then you have fine hair. If you can feel the hair, then it's medium. If you feel a strong, thick strand, then you are coarse. Don't confuse the density of hair with diameter, Papanikolas emphasizes.
Brain 101: Topics in Neuroscience. Semantic Memory. Semantic memory is strongly language-based and describes memory for facts and words. This can be thought of as a form of non-declarative memory because the knowledge is often not associated with a particular time or place. However, semantic memory must be thought of as separate because damage to brain regions that impair semantic memory do not always affect other forms of non-declarative memory, and visa-versa. Episodic Memory.
Psychologist Phyllis Koenig, PhD, explains her research on semantic memory with a simple metaphor: If you want to build a tower out of blocks and you can't, it may be that you don't have the blocks to do it--a problem with supplies. Alternatively, it may be that you don't know how to stack them--a problem with process. It's similar for using semantic memory: the part of memory that allows us to name and categorize everything we sense. Similar to building the tower, if you can't remember what an object is, you might not have the information stored in your brain--a lack of content.