Gíliw (you'll hear it pronounced in the song): an old-fashioned noun that usually refers to someone you have a crush on, commonly used by a boy for a girl. It's no longer in everyday use, hence the old-school visuals of the song Giliw.

Harána, a noun, refers to the act of courtship in which a boy sings with a guitar outside a girl's house. Sometimes alone, but often accompanied with a group of supportive friends (which is great because someone else can play. the guitar).

It's one of the initial activities of "panlilígaw" or courtship. The goal of the harana is to be permitted inside the house to "akyat ng lígaw" (literally, to take the courtship "upstairs" in the living room), to be able to engage in (chaperoned) conversation with the girl and her family. Under the unspoken rules of Filipino courtship, the boy will then be given the high honor of being bossed around by the girl's family for a while.

If all goes well, this could lead to the ultimate goal — exclusive dating (no other suitors) and marriage.

A mambabalút is a balut vendor (also spelled and pronounced balót — steamed, fertilized duck or chicken eggs).

In the style of old-school, mid-20th century Pinoy movies, the street vendor is a handy plot device. They are characters who are literally just walking around on the streets, so they can jump into action at any time.

The mambabalút is great for horror movie scenes because they also roam around at night, as opposed to tahó vendors who are usually around at breakfast time.

The balut vendor's significance as a manananggal's mortal enemy is quite interesting — check out the manananggal description to find out more.

Mánananggal (literally meaning "remover") is a mythical Filipino monster. She (usually it's a woman) is disguised as a normal human being by day. At night, she sprouts huge bat wings and leaves her lower body on the ground.

The upper body, wings and all, would fly around town looking for prey, usually unborn infants. The manananggal would crouch on rooftops and extend their long, sharp tongues into bedroom windows to eat the babies out of sleeping pregnant women.

To avoid this, pregnant women slept with their windows closed, or hung a stingray's tail on their windows to deter the manananggal.

One could also defeat the manananggal by finding its hidden, but vulnerable, lower half and destroying it with salt and fire.

This is why the mambabalut is a significant symbolic vanquisher of this particular monster: the balut, a fertilized egg with almost fully-formed steamed bird embryos, strikes a parallel to the manananggal's preferred victim. Also, the mambabalut carries salt all the time.

Fun fact: the first-ever Filipino horror movie was José Nepomuceno's Manananggal (1927).