(literary) old but full of energy; sprightly

nuclear disarmament

nuclear weapons

painting / drawing / picture

(anatomy) skeleton; a firm structure made up of bones that supports the body and its organs / the basis that forms something; a framework

the act of fighting each other; a fight or grapple / tackling a difficult problem

fight, scuffle / struggle with a problem

diffusion, scattering, spread / (physics) diffusion

to scatter, to spread

clear, distinct