Portance :: Portance (n.) See Port, carriage, demeanor..
Self-importance :: Self-importance (n.) An exaggerated estimate of one's own importance or merit, esp. as manifested by the conduct or manners; self-conceit..
Self-important :: Self-important (a.) Having or manifesting an exaggerated idea of one's own importance or merit.
Supportance :: Supportable (a.) Capable of being supported, maintained, or endured; endurable..