Synonyms for Concealment (same or very similar meaning)
WordNet sense 1 (the condition of being concealed or hidden):
privacy, secrecy, privatenessWordNet sense 2 (a covering that serves to conceal or shelter something):
cover, covert, screenWordNet sense 3 (the activity of keeping something secret):
hiding, concealingFrom the ODE community, based on WordNetadd/edit