When talking about things in Japanese, the words "古い" (furui) and "昔の" (mukashino) mean different things.

1. 古い (Furui):

   • This word means "old."
   • It usually says that something is just old, and sometimes it's not a good thing.
   • For example, "古い車" (furui kuruma) means an old car that might not work very well anymore.

2. 昔の (Mukashino):

   • This word means "from the old days" or "from the past."
   • It brings back happy memories and usually sounds nice.
   • For example, "昔の映画" (mukashino eiga) means old movies that people love and remember fondly.

In short, both words talk about age, but "古い" can make something sound less valuable, while "昔の" makes you think of warm memories and good times.