Number is related to Odd. Odd is a synonym of Ridiculous. Ridiculous is a synonym of Stupid. Stupid is a synonym of Silly. 
Board is related to Stage. Stage is related to Standing. Standing is similar to Permanent. 
Number <--RelatedTo--> Odd <--Synonym--> Ridiculous <--Synonym--> Stupid <--Synonym--> Silly 
Board <--RelatedTo--> Stage <--RelatedTo--> Standing <--SimilarTo--> Permanent 