This is the 575th most frequent Tamil word.
வலத
"வலத" means "right" (direction) in English.
In this sentence, 'வலத' (valadha) is used to indicate direction, meaning 'right' side.
வலத்பக்கம் போகவும்.
Go towards the right side.
Here, 'வலத' (valadha) describes part of the body, specifically the 'right' hand.
அவளது வலத கை அவனிடம் இருந்தது.
Her right hand was with him.
In this context, 'வலத' (valadha) is used to mean 'valid' or 'correct' point, due to its contextual meaning shift.