Spelling Mistake On Republic Of China Silver Coin ?

Check the weight. Fakes are usually several grams lightweight.

Tested it over a magnet and they both aren't magnetic

There are a thousand tiny details that are all, simply, wrong. Here's a few for the first coin:
- the English-language text is... wobbly. Not only is every letter slightly the wrong shape, but duplicate letters are wrong in different ways (the original design would have been made with letter-punches so this should not happen) and the letters when put together don't match up in size or style.
- the floral patterns on both sides are effectively line-drawing outlines of plants, rather than solid 3-D plants.
- the circles of dots on both sides are meandering around and don't seem to be trying very hard to stay in a circle.

The net effect of the entire coin is as if someone took an original coin and hand-carved away at the entire design until practically all the original design was replaced with the hand-carvings. Which is probably more or less exactly what happened: a fake coin die wore out, so the details on the die were re-engraved by hand and more fake coins made. Repeat this a few times, and a coin like this is the result.

The second coin is even worse. I'm not sure if it's a made-up design or if it's copying a rare pattern coin, but they appear to have taken a very rough drawing of the coin, and then made this coin based off of that drawing. The dragons on both sides look very worm-like, and quite un-majestic. The "patina" is also very, very fake here - it looks like it was smeared on, then bits of it were wiped off. Which is probably a more or less accurate description of how it was put there.