Sometimes remembering words can be assisted by memory techniques (or word association, if you like), therefore, remembering little things can help (for example, words that end in -ción, -orio etc.)

El dormitorio – bedroom

Extraordario – extraordinary (or special)

Un escenario – (a) scenario

Un barrio – a village, neighborhood

Frio – cold (temperature)

Mio – my/mine (masculine)

Mia – my/mine (feminine)