In Common Usage. emphases is one of the 10000 most commonly used words in the Collins dictionary.
structure. n. 1. a complex construction or entity. 2. the arrangement and interrelationship of parts in a construction, such as a building. 3. the manner of construction or organization: the structure of society.
<a href=https://explorable.com/definition-of-science>Definition of Science</a>. The definition of science is the observation, identification, description, experimental investigation, and theoretical explanation of phenomena. It is in particular used in activities applied to an object of inquiry or study. [Ref]