残念【ざんねん】
regrettable, unfortunate, disappointing, vexing
記念【きねん】
commemoration, celebration, remembrance, memory, honoring the memory of, memento, souvenir, keepsake
理念【りねん】
(Platonic) ideal (of how things ought to be, e.g. human rights), foundational principle, idea, conception (e.g. of the university), doctrine, ideology
念頭【ねんとう】
(on one's) mind, heed
断念【だんねん】
abandoning (hope, plans), giving up
念願【ねんがん】
one's heart's desire, one's dearest wish
執念【しゅうねん】
tenacity, persistence, obsession, implacability
正念場【しょうねんば】
critical moment, do-or-die situation, critical juncture
疑念【ぎねん】
doubt, suspicion, misgivings, scruples
丹念【たんねん】
painstaking, careful, meticulous, scrupulous, detailed, elaborate
天然記念物【てんねんきねんぶつ】
natural monument, protected species (animal, habitat, etc.)
記念碑【きねんひ】
commemorative plaque (usu. on a stone), stone monument (bearing an inscription)
無念【むねん】
regret, chagrin, mortification, freedom from obstructive thoughts
通念【つうねん】
common idea, common wisdom, generally accepted idea
祈念【きねん】
prayer
念書【ねんしょ】
written pledge, signed note of assurance, memorandum, legal instrument
入念【にゅうねん】
careful, elaborate, scrupulous
余念【よねん】
another idea
念仏【ねんぶつ】
nembutsu, nianfo, the three-word invocation "Namu Amida Butsu" dedicated to the Amitabha Buddha, visualizing a Buddha (in one's mind)
情念【じょうねん】
sentiments, passions
