Newer means more recently made than something else. The newer of the two coats, the newer building at the far end.
It is the comparative of new, and it behaves exactly as short adjectives do in English, adding -er rather than taking more. Newer, newest. It carries no judgement on its own, which is worth noticing, since newer things are not automatically better and the word does not claim they are. In writing about technology it often appears alongside older to divide a field in two, as in newer models and older ones.
1adjectivenewerMore recently made or arrived than something else.
“The newer flats are at the back of the estate.”
Proto-Germanic
*niwizô — newer
Old English
nīwra
Middle English
newer
English, today
newer
From Middle English newer, newere, from Old English nīwra, from Proto-Germanic niwizô (“newer”), comparative of Proto-Germanic niwjaz (“new”), equivalent to new + er. Cognate with West Frisian nijere (“newer”), Dutch nieuwere (“newer”), German neuer (“newer”), Danish nyere (“newer”), Swedish nyare (“newer”), Icelandic nýrri (“newer”).
Etymology from Wiktionary, CC BY-SA