As nouns the difference between smartphone and thumbboard
is that smartphone is smartphone while thumbboard is a small keyboard designed to be operated with the thumbs, as on smartphones.
smartphone
English
Noun
(
en noun)
A mobile phone with more advanced features and greater computing capacity than a featurephone.
thumbboard
Alternative forms
* thumboard
Noun
(
en noun)
A small keyboard designed to be operated with the thumbs, as on smartphones.
Synonyms
* (l)
Coordinate terms
* (l)