1) 0–1 year → Infant
2) 1–3 years → Toddler
3) 3–5 years → Preschooler
4) 6–9 years → Child
5) 10–12 years → Pre‑Teen
6) 13–17 years → Adolescent
7) 18–25 years → Young Adult
8) 26–39 years → Adult
9) 40–59 years → Middle‑Aged Adult
10) 60–64 years → Mature Adult
11) 65–74 years → Senior Adult
12) 75–84 years → Elderly
13) 85–99 years → Very Elderly
14) 100–109 years → Centenarian
15) 110+ years → Supercentenarian