Chemistry Molecules

noun a word that represents a person, place, thing, or idea, such as 'identical' which can be used as a noun to refer to something that is identical to something else

adjective a word that describes or modifies a noun, such as 'identical' which means exactly the same

• The DNA of identical twins is nearly indistinguishable.
• Those two dresses look identical to me.
• They're like two peas in a pod, practically identical.
• Their opinions on the matter were practically identical, like two sides of the same coin.

noun a ring-shaped structure or part, such as the area between the two concentric circles

• The annulus is the outermost layer of the intervertebral disc.
• I learned in biology class that the annulus is like a protective ring around the disc.
• The annulus is like the disc's bodyguard, keeping it safe and secure.
• The annulus acts like a fortress, protecting the inner parts of the disc from harm.