Cases of word usage

1) the scientific study of the structure of animal bodies (anatomy)

2) the scientific study of the sun, moon, stars and planets (astronomy)

3) a scientific instrument used for measuring mass (weight) (balance)

4) the scientific study of the physical life of animals and plants (biology)

5) the scientific study of the structure and distribution of plants (botany)

6) the scientific study of how substances (elements) are made up, how they combine, how they act under different conditions (chemistry)

7) the scientific study of electronic and mechanical instruments (especially compared to natural or biological systems) (cybernetics)

8) the scientific study of the structure and function of plant and animal cells (cytology)

9) the scientific study of the habits of living things, especially their relation to their environment (ecology)

10) the scientific study of the production, sale, distribution and use of goods and wealth (economics)