Same means there is no difference between two things — or that the thing is the one you already know about. You order the same coffee every morning, two brothers turn up in the same jacket, the bus leaves at the same time each day.
Same nearly always travels with the: the same shirt, the same as before, exactly the same. When you compare, the partner word is as — my phone is the same as yours — not with and not like. It stands alone as a noun (I'll have the same, please), and the reply same here means me too. All the same and at the same time both mean despite that: it rained all week; all the same, we had a good time. And same old same old is what you say when nothing has changed and you have stopped expecting it to.
1adjectivesameNot different in any way from another thing, or from how it was before.~98%
“We sat at the same table we had a year ago.”
synonyms: identical, alike
2pronounalreadyThe one already mentioned, or the one you had before.~2%
“He ordered the fish, and I asked for the same.”
Shares are an estimate: a language model read 25 sentences found in the wild and placed 25 of them on a sense — a count of our sample, not a measurement of English.
Also accepted in games: identical
Same reached English twice over: from Old Norse samr, and from Old English same, which survived inside the phrase swā same swā, 'in like manner as'. Both go back to Proto-Germanic *samaz and further to Proto-Indo-European *somHós, 'same'. That root spread wide — Dutch samen 'together', Danish samme, Sanskrit sama, Ancient Greek homós, the homo- at the front of homogeneous. English some is a cousin of it.
Proto-Indo-European
*sem-
Proto-Indo-European
*somHós — same
Proto-Germanic
*samaz — same
Old English
same
Old Norse
samr — same
Middle English
same
English, today
same
Built from
From Middle English same, from Old Norse samr (“same”) and/or Old English same, sama (“same”) in the phrase swā same (swā) (“in like manner, in the same way (as)”), both from Proto-Germanic samaz (“same”), from Proto-Indo-European somHós (“same”). a doublet of some and -some. 2 Cognate with Scots samin (“same, like, together”), Dutch samen (“together”), Danish samme (“same”), Swedish samma (“same”), Norwegian Bokmål samme (“same”), Norwegian Nynorsk same (“same”), Gothic 𐍃𐌰𐌼𐌰, a weak adjectival form, Ancient Greek ὁμός (“same”), Old Irish som, Russian са́мый, Sanskrit सम, Persian هم (“also, same”), Finnish sama (“same”), Estonian sama (“same”).
Etymology from Wiktionary, CC BY-SA