Lesser and Substract

Lesser adjective - Having not so great importance or rank as another.

Substract and lesser are semantically related In some cases you can use "Substract" instead the word "Lesser" as an adverb or an adjective.

Lesser and substract are semantically related in subordinate topic. Sometimes you can use "Lesser" instead the word "Substract" as an adjective or an adverb, if it concerns topics such as secondary.