Geologist is one who studies rocks and earth structure. Geographer studies earth and people, Botanist studies plants, Zoologist studies animals.

Bibliophile means a book lover. Philanderer is a flirt, Bibliographer writes about books, Bookkeeper maintains accounts.

Zoology is the study of animals. Entomology studies insects, Ornithology studies birds, Etymology studies word origins.

Physician is a medical doctor. Pharmacist prepares medicines, Pathologist studies diseases, Physiotherapist treats physical injuries.

Vegetarian is one who doesn't eat meat but may eat dairy. Vegan avoids all animal products, Herbivore is a biological term, Fruitarian eats only fruits.

Calligraphy is decorative handwriting art. Penmanship is writing skill, Typography is font design, Stenography is shorthand writing.

Psychologist studies human mind and behavior. Psychiatrist is a medical doctor treating mental illness, Sociologist studies society, Anthropologist studies human cultures.

Toxicity refers to poison quality. Virulence is disease severity, Malignancy refers to cancerous nature, Pathogenicity is disease-causing ability.

Morgue is where autopsies are performed. Cemetery is burial ground, Mortuary is funeral home, Crypt is underground burial chamber.

Apostate abandons their faith or party. Atheist doesn't believe in God, Agnostic doubts God's existence, Heretic holds false beliefs within a religion.