Meaning: Identical; not different; the same thing as something previously mentioned; similarly; in the same way.
Grammar: It can be grammatically inflected to SAME-AS-YOU, SAME-AS-HER, etc.
Learner tip: Be aware of the homophone ALSO.
Semantic variation. Identical; not different.
First 100 words.
As you feel more comfortable with the first few hundreds of ASL signs, progress further with your vocabulary and learn signing more.