This component is used to expose the raw term vector information for fields that have this option enabled in the schema—termVectors set to true. It is false by default. The term vector is per field and per document. It lists each indexed term in order with the offsets into the original text, term frequency, and document frequency. It's not that useful, so I'll refer you to the wiki for further information, which can be found at https://cwiki.apache.org/confluence/display/solr/The+Term+Vector+Component.