A particular discipline or branch of learning, especially one dealing with measurable or systematic principles rather than intuition or natural ability.
Of course in my opinion Social Studies is more of a science than an art.
2
Specifically the natural sciences.
My favorite subjects at school are science, mathematics, and history.
3
Knowledge gained through study or practice; mastery of a particular discipline or area.
4
The fact of knowing something; knowledge or understanding of a truth.