Relevant words for adverbial why

Below are synonyms, antonyms and words that are in some manner relevant to adverbial why (as applied to automotive subject domain). You may view concordance (full context) and matched context for essential words.

Relevance	Word	Links
100.00%	why	Concordance - Matched context
6.89%	how	Concordance - Matched context
2.21%	longer	Concordance - Matched context
1.05%	about	Concordance - Matched context
0.38%	only	Concordance - Matched context
0.27%	approximately	Concordance - Matched context