-ория

From Proto-Slavic *-orьja, cognate with Macedonian -орија (-orija). Equivalent to -ор (-or) +‎ -ия (-ija).

-ори́я • (-oríja)

1. Derives abstract or collective nouns with expressive connotation: -ity, -ness

   From adjectives:

   вехт (veht, “old, ancient”) → вехтори́я (vehtoríja, “rag, old machine/toy”)

   луд (lud, “crazy”) → лудори́я (ludoríja, “crazy act, madness”)

   From abstract nouns:

   гад (gad, “creep, stinker”) → гадори́я (gadoríja, “dreadfulness, horridness”)

   смях (smjah, “laughter”) → смехори́я (smehoríja, “joke, funny story”)

• -отия (-otija)

Borrowed from Latin -ōrium (the neuter of the adjectival ending Latin -ōrius), found in loanwords. Equivalent to -ор (-or, “agent suffix”) +‎ -ия (-ija).

-о́рия • (-órija)

1. -ory

   From a base word:

   ора́тен (oráten, “orating”) → орато́рия (oratórija, “oratory”)

   дире́ктен (dirékten, “direct”) → директо́рия (direktórija, “directory”)

   обсерва́ция (observácija, “observation”) → обсервато́рия (observatórija, “observatory”)

   ле́кция (lékcija, “lecture”) → лекто́рия (lektórija, “lecture hall”)

   Without a base word:

   кало́рия (kalórija, “calorie”)

   лаборато́рия (laboratórija, “laboratory”)