하든지(ha-deun-ji, hadeunji)
Attached mainly to verbs, it presents two or more actions or choices, often leaving the decision to the listener or suggesting options.
When to use
Presenting choices, Expressing suggestions, Verb-focused
The nuance
Attaches to verb stems as ‘~하든지 ~하든지’, expressing choice or suggestion to the listener; not used with nouns.
든지(deun-ji, deunji)
Attaches to nouns or verbs to indicate an indefinite choice among several options, expressing a neutral, inclusive listing or selection.
When to use
Noun selection, Neutral listing, Indefinite choice
The nuance
Attaches to nouns or verbs to indicate unspecified choice or listing; unlike 하든지, it lacks a suggestion or imperative nuance.
거나(geo-na, geona)
Mainly attaches to verbs to connect two or more actions or states, expressing a simple or factual choice or listing.
When to use
Factual choice, Verb/adjective connection, Simple listing
The nuance
Attaches to verbs or adjectives as ‘거나’, used for simple factual choices or listings without suggestion or imperative nuance.