Compress files:

zip output.zip file1 file2 file3

Compress folder:

zip -r output.zip folder1 folder2

Decompress zip file:

unzip output.zip  # unzip into the directory where the zip file exists 
unzip output.zip -d folder1 # unzip into folder from where the zip file exists

Source:
https://www.cyberciti.biz/faq/how-to-create-a-zip-file-in-unix/