yearn after, long for, aspire to, admire, adore
憧 centers on a heartfelt, often distant desire: yearning for something or someone, longing deeply, aspiring toward an ideal, or admiring and adoring from afar.
憧 combines 忄 (heart) with 童, which likely contributes the sound and the idea of a child's pure, focused longing. The exact historical development is uncertain, but the phono-semantic structure is broadly accepted.
The heart radical 忄 beside 童 (child) suggests a childlike, pure-hearted yearning. Picture a child gazing longingly at something they admire, with all their heart.
For ショウ, imagine a child's heart yearning to see a show: show -> ショウ, and the child longs for the performance.