Type of Analysis in quality control

What is the difference between qualitative and quantitative analysis, explain with an example…

Qualitative means we are analysed the sample only for. Quality of main peak in CP in HPLC, and in wet part solubility,identification by IR like etc
But quantitative means we perform strength of required compound in analytical mixture, example Assay by HPLC,RS by HPLC, Assay by titrimetry like.

Qualitative analysis usually yields a yes or no answer, a sterility test is either positive or negative.
Semi-quantitative analysis is usually a limit test, heavy metals are NMT xxxppm
Quantitative analysis yields a number as a result, assay in mg/L or %

Simply; Qualitative = compare, Quantitative = calculate.