General synonyms:
* Knowledge
* Learning
* Study
* Research
* Inquiry
* Scholarship
* Discipline
* Field
More specific synonyms:
* Natural science (for the study of the natural world)
* Social science (for the study of human society)
* Technology (for the practical application of science)
* Methodology (for the systematic process of scientific inquiry)
Informal synonyms:
* Stuff (informal, often used in phrases like "science stuff")
* Facts (informal, emphasizing the objective nature of science)
The best synonym for "science" depends on the specific context and the meaning you want to convey.
