barberry

As a proper noun blackberry

is (telephony|computer hardware) a smartphone brand the brand name of a wireless handheld device, a cross between a cellphone and a mobile email appliance and internet-capable pda, by or by extension similar apparatus made by competitors.

As a verb blackberry

is to send a text message or e-mail with a blackberry device.

As a noun barberry is

any of the thorny shrubs of genus berberis , which bear yellow flowers and red or blue-black berries.