Footfall vs Walkin - What's the difference?

Walkin is likely misspelled.

Walkin has no English definition.

is the sound made by a footstep.

* foot-fall

(en noun)

(countable) The sound made by a footstep.

* 1611 , , The Tempest , act 2, sc. 2,

. . . like hedgehogs which

Lie tumbling in my barefoot way and mount

Their pricks at my footfall .

* 1916 , , "The Hungry Stones," in The Hungry Stones And Other Stories ,

I heard many footfalls , as if a large number of persons were rushing down the steps.

(chiefly, British, uncountable) Foot (pedestrian) traffic.

* 1883 , , The Silverado Squatters , ch. 1,

This stir of change and these perpetual echoes of the moving footfall , haunt the land. Men move eternally, still chasing Fortune.

* 2008 , " Bargains galore in battle of the high street," The Scotsman , 9 Dec. (retrieved 11 Dec. 2008),

With high-street stores desperate to increase footfall and buck the financial downturn, retailers have started issuing discount vouchers.