Masculine / Feminine nouns

Question

Nouns in spanish are classified into two. Masculine and Feminine..
How could I determine whether a noun is masculine or feminine'..

Answer 1

thank you very much, lazarus...
i copied it for me to memorize...

Answer 2

You can't, because it isn't logical.

Masculine nouns:

? Most of the ones ending in 'o. A few exceptions are libido, mano, polio y virago, and shortened words, like loto (lotería), moto (motocicleta), radio (radiodifusión), and foreign words like felatio y macro.
? Most rivers, mountains, seas, etc.
? Most words ending in 'or, except coliflor, flor, labor and sor.
? Words ending in 'aje and'an, except paralaje.

Feminine nouns:

? Most nouns ending in 'a (but not in 'ista). Some exceptions (mostly Greek words): aroma, axioma, buda, carisma, clima, día, diagrama, dilema, drama, fantasma, idioma, mañana', panda, planeta, prisma, sistema and tema.
? Nouns ending in 'd, except abad, alud, áspid, ataúd, césped, laúd, and foreign words such as récord y milord.
? Nouns ending in 'ción y 'sión, except for those with augmentative suffixes, like ansión, roción, notición or sentención.
? Many nouns in 'z. Some excepciones: ajedrez, albornoz, altavoz, altramuz, antifaz, arroz, barniz, cáliz, cariz, disfraz, haz, lápiz, maíz, matiz, pez.

' = (both masculine and feminine)