go get						go getter
go find
go see
go try
come see
come talk

sleepwalk	?sleepwalked	sleepwalking	sleepwalker
?undertake			?undertaking	undertaker
tire swing			tire swinging	?tire swinger
troubleshoot			troubleshooting	troubleshooter

kill pain	?killed pain	?killing pain	painkiller
remove stains	removed stains	removing stains	stain remover
collect coins	collected coins	collecting coins coin collector
generate numbers generated numbers generating numbers number generator
open eyes	opened eyes	opening eyes	eye opener
build a house	built a house	building a house housebuilder
own a home	owned a home	owning a home	homeowner
eat meat	ate meat	eating meat	meat eater
drink beer	drank beer	drinking beer	beer drinker
come late	came late	coming late	latecomer

kill time	killed time	killing time	?time killer
kill insects	killed insects	killing insects	?insect killer (insecticide)
spill milk	spilled milk	spilling milk	?milkspiller
bend bars	bent bars	bending bars	?bar bender

know facts	knew facts	knowing facts
kill people	killed people	killing people
break a computer broke a computer breaking a computer
display graphics displayed graphics displaying graphics


pick up		picked up	picking up
find out	found out	finding out
throw up	threw up	throwing up
take out	took out	taking out
cut down	cut down	cutting down
take up		took up		taking up
eat up		ate up		eating up
take over	took over 	taking over (a country, business)
overtake	?overtook	?overtaking (a car on a highway)

also note:
I am collecting coins.
I am going to a coin-collecting seminar.

I am building a house.
I am going to a house building seminar.

My dog is eating meat.
Dogs are meat eating creatures.

I am drinking beer.
I am going to a beer drinking party.

I am picking up trash.
*I am going on a trash uppicking project.

I am cutting down the tree.
?I am going on a tree cutting project.

I am painting this wall.
I am taking a course in wall painting.

The computer is generating numbers.
The computer is running a number generating program.