form vs. grade

form vs. phase

form vs. organise

form vs. organize

form vs. make

form vs. spring

foothold vs. footing

fauna vs. zoology

flora vs. plant

flora vs. vegetation

food vs. nutrient

farewell vs. leave

farewell vs. parting

flight vs. trajectory

fledge vs. flight

find vs. get

find vs. receive

find vs. obtain

find vs. incur

feel vs. find

find vs. rule

find vs. witness

find vs. see

find vs. notice

find vs. observe

find vs. recover

find vs. retrieve

find vs. regain

find vs. happen

find vs. uncovering

foiling vs. frustration

frustration vs. thwarting

fruition vs. realization

fulfillment vs. fulfilment

failure vs. nonstarter

failure vs. loser

fault vs. mistake

fault vs. shift

fault vs. fracture

fault vs. faulting

fault vs. flaw

fail vs. flunk

fall vs. return

fall vs. light

fall vs. strike

fall vs. precipitate

fall vs. surrender

fall vs. spill

fall vs. tumble

fall vs. pin

fall vs. twilight

fall vs. gloaming

fall vs. gloam

fall vs. nightfall

fall vs. lessen

fall vs. settle

fall vs. flow

fall vs. hang

fuckup vs. fumbler

fuckup vs. stumbler

fumble vs. muff

fumble vs. grope

fluff vs. frivolity

fluff vs. frippery

fluff vs. tease

fluff vs. ruffle

freeing vs. liberation

freeing vs. release

fling vs. spree

fling vs. pass

fling vs. splurge

fastball vs. heater

fastball vs. smoke

fastball vs. hummer

force vs. violence

force vs. forcefulness

force vs. strength

force vs. personnel

force vs. power

force vs. thrust

force vs. pull

force vs. squeeze

force vs. wedge

force vs. take

force vs. storm

force vs. impel

force vs. push

force vs. pressure

forwarding vs. promotion

forwarding vs. furtherance

firing vs. liberation

firing vs. ignition

firing vs. lighting

firing vs. kindling

firing vs. inflammation

fire vs. firing

followup vs. reexamination

followup vs. review

flair vs. flare

flare vs. irrupt

flame vs. flare

falsification vs. falsifying

falsification vs. refutation

falsification vs. refutal

falsehood vs. falsification

falsification vs. misrepresentation

fix vs. location

fix vs. reparation

fix vs. jam

fix vs. hole

fix vs. mess

fix vs. pickle

fix vs. muddle

fix vs. sterilize

fix vs. sterilise

fix vs. unsex

fix vs. repair

fix vs. mend

fix vs. restore

fix vs. ready

fix vs. fixate

fix vs. set

fix vs. limit

fix vs. specify

fix vs. get

fix vs. secure

fasten vs. fix

fix vs. posit

fix vs. situate

fix vs. make

fix vs. prepare

fomentation vs. instigation

fastening vs. fixing

fastener vs. fastening

fastening vs. holdfast

flit vs. flutter

forbiddance vs. prohibition

forgoing vs. renunciation

forswearing vs. renunciation

forfeiture vs. sacrifice

fossilisation vs. fossilization

flow vs. flux

flux vs. fluxion

flux vs. mix

flux vs. meld

flux vs. fuse

flux vs. merge

flux vs. immix

flux vs. liquefy

flux vs. liquify

finish vs. finishing

finish vs. goal

finish vs. refinement

finish vs. polish

finish vs. stop

finish vs. terminate

fade vs. slicing

fade vs. slice

fade vs. languish

fade vs. melt

fade vs. pass

fade vs. wither

finale vs. finis

finalisation vs. finalization

founding vs. initiation

furtherance vs. promotion

foundation vs. initiation

foot vs. foundation

foundation vs. groundwork

foundation vs. fundament

foundation vs. substructure

foundation vs. understructure

foundation vs. grounding

formation vs. shaping

frying vs. sauteing

fixation vs. fixing

fixation vs. obsession

fixation vs. regression

fortification vs. munition

facelift vs. lift

fixing vs. reparation

fixing vs. neutering

fixture vs. reparation

fastness vs. fixture

fixedness vs. fixture

fixity vs. fixture

fixture vs. secureness

fixture vs. regular

fixture vs. habitue

ford vs. fording

footstep vs. step

flounce vs. ruffle

flounce vs. frill

flounce vs. furbelow

foot vs. pes

foot vs. infantry

foot vs. ft

foot vs. hoof