Different people seem to have different ideas as to what is meant by these expressions.
some women say they`ve cum, when they produce lubricating liquid from their vaginal glands.
Orgasm in both sexes is when you reach your climax and your muscles pulsate. In a Man this is usually combined with ejaculation of seminal fluid.
For a woman, it can be accompanied by disharging fluid, known as squirting, in some women.
But for most women their climax , orgasm, is accompanied by the vaginal muscles contracting rhythmically 6 or 7 times.
this is an involuntary response.

thankyou for the reply. just to clarify... what if a woman discharges fluid when she's turned on in sex but does not pulsate climax orgasm then is this squirting still?

if it comes out with some force , usually from the uretha (Pee hole)
then it can be called squirting yes.
When some ladies say they have cum, they just mean because their vagina is wet, but that is lubricating fluid and comes out slowly from the Bartholin's glands which are situated on the inner lips of the vagina.
During sexual excitement, vaginal discharge becomes very profuse because two glands near the vaginal opening (the Bartholin's glands) secrete additional slippery mucus, which acts as a lubricant for intercourse.

some women can squirt a lot. A porn star called Cytheria , can squirt about 1 or 2 feet sometimes(up to 60 cmtrs) but that is most unusual.
most ladies dont squirt, but many do.
Usually it is some form of sexual stimulation that builds them up to a climax , and then it gushes out in a quick release. so it is a type of orgasm for some women, cos after they squirted , their tension is released and they want to stop then and rest to recover. But like with multiple orgasms, some ladies like to keep going , and squirt again.
But after about 3 times they have no liquid left to squirt out anymore.So then they finished.

If you have lubrication coming out without the orgasm that is perfectly normal. Its just being wet and if it comes out in a gush that was just a muscle spasm in your vagina, but not one strong enough for an orgasm. At least that is how I was explained what it was.

And yes, some women can indeed "cum" in a manner much the same way a man can.

during sex, there has been a few times i've felt like i'm about to pee, and so had to hold it to not freak out my partner. so ive started going to the bathroom before, so as to avoid this, but it still happens. would this be squirting then?

lots of women when they're just about to orgasm feel like they're going to pee, then they orgasm. you will not pee though don't worry lol. that feeling happens to me every time it's normal. i get that feeling first with a fast heart beat, then a hot shiver type thing travels up my body and finally violent orgasmic contractions

my wife gets that to the vagina shakes in shivers