The list has grown since I first posted it (click to view the original post). The following is a repost with updates and a summary. The list was also reorder to provide better visibility.

It is common for a word to be used as both a noun and verb, i.e. to hammer with a hammer. In both Standard Cantonese and Taishanese, there's usually a tone difference between the two forms, and the noun form usually come with a tone change. Here's a tentative list in Taishanese. Can you come up with more?

	Verb Tone	Noun Tone	Verb	Noun
引 [yin]	21	215	to guide	fuse
犁 [lai]	22	22	to plow	plow
题 [hai]	22	22	to remind, to give hints	exercise/exam item
钳 [kiam]	22	225	to pinch with a pair of pincers	pincer
磨 [mɔ]	22	225	to grind, to rub	grinder
轮 [lun]	22	225	to take turns	wheel
刨 [pɔu]	22	215	to plane	plane
凿 [dɔk]	32	215	to chisel	chisel
篮 [lam]	32	21	to pull up	basket
旋 [dun]	32	21	to turn, to spiral around, to coil	the center spot of a hair whorl
页 [yiap]	32	21	to page	page
夹 [gap]	32	215	to clip, to press from both sides, to pinch	clip
合/盒 [hap]	32	215	to close, to fold (合)	box (盒)
撬 [giau]	32	325	to pry	pry bar
磅 [bɔŋ]	32	325	to weight	scales
袋 [?ɔi]	32	325	to put (something) into one's pocket, to pocket	pocket, sack
话 [?ɔi]	32	325	to scold, to say to	spoken words
钠 [nap]	33	21	to hook, to hold with a hook	holding hook
钩 [ŋǝu]	33	21	to hook	sharp hook
包 [bɔu]	33	21	to wrap	sack
秤 [tsein]	33	21	to weight	steelyard
印 [yin]	33	21	to imprint	mark
咒 [jiu]	33	21	to curse	spell
摺/褶 [dziap]	33	21	(摺)to fold	(褶)pleat, fold
钉 [?iaŋ]	33	21	to nail	nail
堆 [?ui]	33	21	to heap	heap of dirt; burial heap
闩 [san]	33	21	to close (door or window)	door bolt, crossbar
捏 [nɛt]	33	21	to pinch	pinch mark
筛 [sai]	33	21	to sieve	sieve
记 [gi]	33	21	to remember, to note, to make note	birthmark
送/餸 [ɬǝŋ]	33	21	(送)to go with rice	(餸)dishes of food to go with rice
裂 [lɛt]	33	21	to crack, to split	crack
扣 [kǝu]	33	21	to buckle up, to hook	buckle, hook
箍[ku]	33	21	to hoop	hoop
钓[iau]	33	21	to fish (with a pole)	fishing pole
盖[gɔi]	33	21	to cover	cover
扎[dzat]	33	215	to tie, to bind	binder (for bundling)
锥 [dzui]	33	215	to bore a hole	awl
锉 [tɔ]	33	215	to file	file
挖 [vat]	33	215	to pick	picker
刷 [tsat]	33	215	to brush	brush
拍 [pak]	33	215	to paddle, to swap	paddle, swapper
扫 [ɬɔu]	33	215	to sweep	duster, sweeper
叉 [tsa]	33	215	o split, to hold up with a fork	fork
塞 [?it]	33	215	to stop (a leak); to block (fluid flow)	bottle stop
插 [tsap]	33	215	to pierce	a flat and sharp piercing tool
对 [?ui]	33	215	to complete (a couplet)	couplet
带 [?ai]	33	215	to carry, to bring	belt, band
罩 [dzau]	33	215	to cover, to wrap	cover (usually of the porous type, like a screen)
计 [gai]	33	325	to calculate	idea
分/份	33	32	(分)to divide	(份)portion
车 [tsia]	33	33	to cart way, to convey by car	cart, car
教 [gɔu]	33	33	to teach	teaching, religion
锯 [gui]	33	335	to saw	saw
垫 [dein]	33	335	to cushion	cushion
钻 [dɔn]	33	335	to drill	drill
煲 [bɔu]	33	335	to boil, to cook	pot
梳 [sɔ]	33	335	to comb	comb
包 [bɔu]	33	335	to wrap	bun
封 [fǝŋ]	33	335	to close, to enclose, to seal	envelope
油 [yiu]	33	335	to paint	paint
拖 [hɔ]	33	335	to drag, to mop	mopper
搂/褛 [lǝu]	33	335	(搂)to drape over, to cover up	(褛)overcoat
套 [hau]	33	335	to sheath, to cover, to wrap	sheath, wrapper, (pillow/blanket) cases
封 [fǝŋ]	33	335	to enclose	envelope
遮 [dzia]	33	335	to cover, to give shade	umbrella
种 [dzǝŋ]	33	55	to plant	seed
辘 [lǝk]	33	55	to roll	wheel
数 [su]	55	33	to count	arithmetic, account, numbers
铲 [tsan]	55	55	to shovel	shovel
剪 [dein]	55	55	to cut	cutter
锁 [ɬɔ]	55	55	to lock	locks
饮 [ŋim]	55	55	to drink	rice soup (taken out while rice is boiling: byproduct of cooking steamed rice)
点¹[iam]	55	55	to pen a dot, to touch	(black) dot
湾[van]	335	33	bay	to moor (a boat)
插手[tsap siu]	33-55	21-55	to put one's hand into; to interfere	a pick-pocket

From the growing list we can observe that:

The verbs and nouns in the pairing list are monosyllabic.
The verbs have the original tones, and the nouns were formed through tone changes, i.e. first one had the need to dig before the invention of the digger?
As pointed out by Aaron,There is the tone change to [21], which is what you see with 篮, for example. There is also the tone change where a [5] is appended to the end of the tone, creating rising/dipping tones. There’s also the situation where both occur together, as in 锉.
For verbs with the highest tone (55) in the tonal system, i.e.铲 (to shovel),剪 (to cut), the corresponding nouns stay with the same level. This is because there can be no tone change from the highest (5) to lowest (1) level, and it can not be raised any higher as well.

Note that the verb 包³³ to wrap produced two nouns 包²¹ sack/bag and 包³³⁵ bun with different tone level shifts.

Some can pair together to make new words. For example, 油³³油³³⁵ a house-painting job, 包³³包³³⁵ bun making, 数⁵⁵数³³ number counting, and 对³³对²¹⁵ a game to complete a couplet after one party propose the first half.

Just to note that the noun form of 油 can take on different tones, i.e. 油³³ as oil or 油³³⁵ paint/lubricant. This is another common tone-change effect that we will discuss later.

1. 点 simple dot is an old noun. It is one of the 11 basic strokes for composing Chinese characters. Its verb form appeared much later. In Middle Chinese, the noun and verb form of 点 had different tones.