I thought the words were categorized by masculine and feminine using the letters "o" and "a"
That's just a general rule. You have to memorize them. For example, the hand is la mano, so a hand would be una mano.
In general, words ending in 'a' are feminine, and 'o' are masculine, but there are few exceptions such as 'mano' (feminine)
Sometimes I hear calle pronounced as "kah-yay" and other times as "kah-jay". Which is more common?
I think it depends on the area. In Puerto Rico it would be like kah-jay.
There's a song I like called "Perdido en la calle" (lost in the street) and it helped me remember this.
I just looked that song up on Spotify and I really like it! Thankyou (mucho gracias) and I hope the song helps me remember that calle is a feminine word :)
Why is a street feminine? And a bus masculine? And a suitcase feminine? I was thinking it was because calle ends as a vowel and autobus ends as a consonant
I typed "una ca" and as I was reaching the L on my keyboard my finger slipped and pressed enter.
If your wondering hpw its a feminine word, it is becuase theoreticaly, a women would be saying this in our cercumstance, since a female voice is saying the phrase. Hope this helps