Where does “хероизам//heroizam” come from?

хероизам//heroizam (Serbo-Croatian) comes from French héroïsme, from French -ïsme, from Latin -isma, from Latin -ismus, from Ancient Greek -ισμός, from Ancient Greek -μός, from Proto-Indo-European -mós — Creates action/result nouns from verb stems.

Ancestry of “хероизам//heroizam”, step by step

Step	Language	Word	Meaning
1	French	héroïsme	heroism
2	French	-ïsme	-ism, variant of -isme following vowels
3	Latin	-isma	Alternative form of -ismus; -ism
4	Latin	-ismus	-ism
5	Ancient Greek	-ισμός	Forms abstract nouns
6	Ancient Greek	-μός	Forms abstract nouns
7	Proto-Indo-European	-mós	Creates action/result nouns from verb stems

Every word from Proto-Indo-European -mós →Every word from French -ïsme →Every word from Ancient Greek -μός →