To get a better idea of what multifunctionality is, you can read through some descriptions of multifunctional items.
Multifunctional affixes that appear within a category
Multifunctional affixes that and appear in different categories
Maximally multifunctional affixes that appear in both derivation and inflection
Slovenian sufix -ov
We have considered -ov in many of our works, which means that you can read more about it here, here and here. And for more on -ov BCMS, read this and this.
Slovenian sufix -l
We can observe -l in (past) participle and as a part of deverbal nouns and adjectives. To get more information about it, read this and this.
Slovenian sufix -j