Tinner vs Tinnier - What's the difference?

As a noun tinner

is tinsmith.

comparative of tinny.

(en noun)

tinsmith

a worker in a tin mine

* Blackstone

The stannary courts of Devonshire and Cornwall, for the administration of justice among the tinners therein, are also courts of record.

(head)

(tinny)

(en-adj)

Of or pertaining to or resembling tin.

:The object had a tinny appearance.

Pertaining to the thinness and cheapness of tin or similar-looking metals, in contrast to a heavier, more valuable metal.

:The shop was filled with tinny tourist geegaws.

Pertaining to a thin, unpleasant sound recalling that of tin being rapped.

:The piano was not simply out of tune, but had become downright tinny .