ambar (2) noun "fate, doom" (variant of umbar?) in Turambar(SA:amarth); stem ambart- (PE17:66), instrumental ambartanen "by doom" (Silm ch. 21, UT:138, PE17:66). The early "Qenya" lexicon has ambar "Fate", also amarto(LT2:348)
ambar (3) noun "”breast” (chest), with stem in -s- or -r- (QL:30). The form ambar, translated “in bosom”, occurs in MC:213 (this is "Qenya"). Note: if this word were to be adapted to LotR-style Quenya, we should probably have to read *ambas with stem ambar-; compare olos, olor- “dream” from a late source. However, the form ambos (q.v.) is less ambiguous and may be preferred.
Ambarenya, older [MET] Ambarendya place-name "Middle-earth" (but the more usual word is Endor, Endórë) (MBAR)
ambaron (ambarón- as in "g.sg. ambarónen", in LotR-style Quenya this would be a dative singular) noun "uprising, sunrise, Orient" (AM2). - In the Etymologiesas printed in LR, the form ambaronalso appears in the entry MBAR, but according to VT45:33 this is an error for ambaren, apparently intended as the genitive singular of ambar (in LotR-style Quenya it would rather be the dative singular).
Ambaróna place-name “Eastern (land)”, possibly basically an adjectival form Ambarónë "uprising, sunrise, Orient" (LotR2:III ch. 4; PE17:82, compare the Etymologies, entry AM2)
Ambarónënoun "uprising, sunrise, Orient" (AM2)
Ambarto masc. name *"upwards-exalted", mother-name (never used in narrative) of Pityafinwë = Amrod (PM:353, 354)