Is residual volume a synonym for dead space volume? If not, then why?

Amount of air that remains within lungs after a forced exhalation is called residual volume. This air participates in gasseous exchange but anatomical dead space volume cannot do so. Residual volume is an amount of air that allows diffusion of gases to continue between pulmonary blood capillaries and alveoli even after a forced exhalation. The volume could never be measured. Anatomical dead space volume represents an amount of air that does not participate in gaseous exchange because it is retained in the respiratory tract, and can not reach vascularised alveoli. Generally an young adult breathes in 500ml of air, which is called tidal volume . 150ml of tidal volume occupies anatomical dead space.

Space debris - Wikipedia

Lung volumes and dead space, Pulmonary system

June 1: Tracking Florida COVID-19 Cases, Hospitalizations, and Fatalities – Tallahassee Reports

Chapter 4 Crimes against Humanity in: Adjudicating Attacks Targeting Culture

BIOL 238 Class Notes - Respiratory System

Lung volumes and capacities: Video & Anatomy

Frontiers Myths and Misconceptions of Airway Pressure Release Ventilation: Getting Past the Noise and on to the Signal

Residual volume - Definition and Examples - Biology Online Dictionary

Solved What is the difference between residual volume and

LUNG VOLUMES AND CAPACITIES - Respiratory Physiology - Physiology 5th Ed.

What is residual volume, what is dead space