昭 is a bound form (b.f.) that appears in literary or formal compounds, conveying the sense of 'clear, obvious' or 'to make manifest'. It is common in words like 昭示 (to clearly show), 昭雪 (to exonerate, to clear one's name), and the idiom 昭然若揭 (as clear as day). As a name component, it can mean 'bright' or 'illustrious'. Because it is not used as an independent word, you will encounter it as part of multi-character expressions.