Difference between solr and lucene

Question

I know that Lucene and Solr are 2 differents Apache projects that are made to work together, but I don\'t understand what is the aim of each project.

For what I unde

Answer 1

A simple way to conceptualize the relationship between Solr and Lucene is that of a car and its engine. You can't drive an engine, but you can drive a car. Similarly, Lucene is a programmatic library which you can't use as-is, whereas Solr is a complete application which you can use out-of-box.

Source: Lucene-vs-solr - Lucene Tutorial