All Para SF soldiers are paratroopers, but all paratroopers are not Para SF.

See the major difference between two are -

Para regiment (Airborne) - These are Elite Forces. PARA (AIRBORNE) operate in large teams and coordinate with other units, as their role involves occupying large areas behind enemy lines. PARA operate in strength and are focused on airborne assault, raids and rear area disruption missions along with providing the spearhead elements of our National Rapid Reaction Capabilities.

Para Commando (SF) - These are designated special forces unit of Indian Army. PARA SF units operate in small assault teams, which work individually behind enemy lines. PARA (SF) units work in small teams and are focused on operations other than war and on strategic reconnaissance,surveillance and target designation and direct action tasks.

Hope it helps!