heroism
noun /ˈherəʊɪzəm/
  /ˈherəʊɪzəm/
 [uncountable]- very great courage
- The firefighters displayed both heroism and staunchness.
 - He showed great heroism in going back into the burning building.
 
Oxford Collocations Dictionaryadjective- extraordinary
 - real
 - true
 - …
 
- display
 - show
 - celebrate
 - …
 
- an act of heroism
 
Word Originearly 18th cent.: from French héroïsme, from héros, from Latin heros, from Greek hērōs ‘hero’.