Your forehead is the front part of your head.

(The prefix fore means front; it is la frente.)

The front is the opposite of the back, or it is the front in a war; it is el frente.

If you want to light a cigarette, don’t ask for fire.

Say Can you give me a light?  Have you got a light or a lighter?

Fire is fuego but it is also incendio.

Electricity bill (la factura de la luz) is for more than just light. And if there are roadworks in the street outside your house, you might have all of your electricity cut off, not just the light.

This means well-known. Its meaning is not associated with family.

Examples:

A familiar place/ a well-known place

A familiar person/ a well-known person

I’m not familiar with this place.

You can use the word family as an adjective.

Examples: 

family holiday

family finances

family day

Mis padres – parents (NOT fathers)

Most people in the world only have one father but Spanish people have more than one- when they say mis padres  as my fathers. This is a common mistake for Spanish people.

If you ask a British person “Do you have brothers?” (¿Tienes hermanos?), he might say Yes I have two not mentioning the sisters he has, because you only ask about brothers.

This is the correct one:

¿Tienes hermanos?  = Do you have brothers and sisters or Do you have siblings (NOT Do you ...

Many people make mistakes by saying that someone is a good cooker. Please don’t say that to someone. Cooker is the apparatus in the kitchen you use for cooking and the person who cooks is a cook.