The term 'Like a Scalpel' refers to something that is SHARP and STERILE, as a scalpel would be. The two words that describe this term are 'SHARP' (5 letters) and 'STERILE' (7 letters). Sharpness is a quality of being able to cut through something easily, while sterility is the state of being free from bacteria or other microorganisms. Together, these two words describe a tool that is both SHARP and free from contamination, like a scalpel.