Are all correct expressions. "reborn" is usually used to describe that someone or something has gained new vitality after major changes or transformations, which may be radical or fundamental. It emphasizes a new beginning and rebirth. "rejuvenation" focuses more on describing people or things that glow with new brilliance and vitality after some degree of renewal or improvement. This change may be superficial or gradual. It emphasizes a new vitality and brilliance.