List: out-dated or obsolete kana usage

popular  obsolete reading  rarely used kanji form  JLPT N4  noun (suffix)  noun (generic)  noun  noun taking the genitive case particle の  adjective (generic) 

• not exceeding ..., not more than ..., ... and under, ... and below, ... or fewer
• below (a standard, level, etc.), under, beneath, less than
• the following, the below-mentioned, the rest, followed by ...
• including ..., ... and other (employees, officials, etc.)

popular  obsolete reading  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic) 

• (on the) sea, surface of the sea

popular  obsolete reading  rarely used kanji form  JLPT N3  noun  noun (generic) 

• tear, tears, lachrymal secretion
• sympathy

popular  obsolete reading  honorific language  noun  noun (generic) 

• Your Highness, His Highness, Her Highness

popular  obsolete reading  JLPT N4  noun  noun (generic)  adverb  archaic  conjunction 

• space (between), gap, interval, distance, stretch
• period of time (during, while), duration, interval
• between (two parties or things)
• among (a group)
• relations (between), relationship
• midpoint, average, halfway, middle ground
• due to, because of

popular  obsolete reading  noun  noun (generic) 

• ticket, token, check, receipt
• label, tag
• sign, card, plate
• playing card
• charm, talisman
• slip of paper posted on shrine pillars by pilgrims

popular  obsolete reading  rarely used kanji form  JLPT N3  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• invitation

popular  obsolete reading  JLPT N5  noun  noun (generic) 

• library

popular  obsolete reading  search-only kanji form  JLPT N3  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• reading (books)

popular  obsolete reading  JLPT N5  noun  noun (generic) 

• writing, composition, essay, article, passage, prose, (writing) style
• sentence