This is the 235th most frequent Spanish word.
igual
Equal.
Here, 'igual' is used as an adjective meaning identical or same, describing the size.
El perro y el gato tienen igual tamaño.
The dog and the cat are of equal size.
Here, 'igual' functions as a comparative term meaning "the same", establishing equivalence in treatment between subjects.
Trátame igual que a los demás.
Treat me the same as others.
In this sentence, 'igual' is used as an adverb equivalent to "still" or "anyway", conveying continuation despite a condition.