The key difference between throwing and bowling is that a bowler's elbow must not extend or hyperextend at an angle greater than 15 degrees during the bowling action.[1]

If interested in cricket analytics there are two very nice R packages available to support this.[2][3]

Cricsheet is a good source of data.[4]

[1] https://en.m.wikipedia.org/wiki/Bowling_(cricket)

[2] https://cran.r-project.org/web/packages/cricketr/index.html

[3] https://cran.r-project.org/web/packages/yorkr/index.html

[4] http://cricsheet.org