flack

As a noun flack

is flake (esp of snow).

As an interjection alack is

an expression of sorrow or mourning.

As nouns the difference between flock and flack

is that flock is a large number of birds, especially those gathered together for the purpose of migration while flack is a publicist, a publicity agent.

As verbs the difference between flock and flack

is that flock is to congregate in or head towards a place in large numbers while flack is to flutter; palpitate.

As a proper noun black

is .

As a noun flack is

flake (esp of snow).

As nouns the difference between taxonomy and flack

is that taxonomy is the science or the technique used to make a classification while flack is flake (esp of snow).