How are the following related? 1) Pugin, Hawksmoor, Barry, Paxton. ( I know they are all architects, but is there something more) 2)Bebop, Cool, Gutbucket, Honky-tonk. 3)Yoruba, Ibo, Taal, Twi. 4)Banksia, Bottlebrush, Hoya, Wattle. 5)Buggy, Curricle, Gharry, Tumbril.