Can "oblivion" also be considered a place? [closed]

oblivion
əˈblɪvɪən/noun1.
the state of being unaware or unconscious of what is happening around one. "they drank themselves into oblivion"

So according to the dictionary, it's a state. But can one treat it as a place?

Example:

Tom's father died; he's now in oblivion, resting blissfully in peace.

In this sentence, I'm treating oblivion more like a place than a state of mind. Is this weird? If so, what's a more appropiate word?

It's not only weird -- it just doesn't work. As Dan says in his comment, nobody can be resting peacefully in oblivion. Oblivion is devoid of anything. A more appropriate "place" word would be "the hereafter" or "a better place." Or get rid of the resting blissfully part.

To the ears of an everyday English-speaker, “Tom's father died; he's now in oblivion, resting blissfully in peace,” would likely be misunderstood, at best, as acerbic irony, and at worst as disrespect for the dead. Moreover, your example usage would not be understood as a “place” but rather as an “existential state,” i.e., the state of non-being. That said, oblivion, in the sense of unconsciousness or unawareness does connote with a state of ignorance, which is often idiomatically characterized as "bliss,” e.g., “ignorance is bliss.”

I would not recommend this usage of oblivion, for the reasons stated above. As an alternative you might say, “Tom’s father has died. His suffering has now ended, may he rest in peace.”

oblivion noun:

1. the state of something that is not remembered, used, or thought about any more.

2. the state of being unconscious or unaware: the state of not knowing what is going on around you,

3. the state of being destroyed.

(Merriam-Webster online)

Etymology

oblivion (n.) late 14c., "state or fact of forgetting," from Old French oblivion (13c.) and directly from Latin oblivionem (nominative oblivio) "forgetfulness; a being forgotten," from oblivisci (past participle oblitus) "forget," originally "even out, smooth over, efface," from ob "over" (see ob-) + root of levis "smooth," from PIE lei-w-, from root *(s)lei- "slime, slimy, sticky" (see slime (n.)). Meaning "state of being forgotten" is early 15c. (etymonline)

oblivious (adj.) mid-15c., from Latin obliviosus "forgetful, that easily forgets; producing forgetfulness," from oblivion (see oblivion). Meaning "unaware, unconscious (of something)" is from 1862, formerly regarded as erroneous, this is now the general meaning and the word has lost its original sense of "no longer aware or mindful." Properly should be used with to, not of. Related: Obliviously; obliviousness.

(etymonline)