✅ Pitiful describes something that inspires pity, often due to weakness or poor condition (The pitiful dog limped down the street).

✅ Abject means extremely bad, hopeless, or miserable (The refugees lived in abject poverty).

✅ Both words describe situations or conditions that evoke sympathy or sorrow.

✅ Pitiful is more common and less intense, while abject often describes extreme conditions of misery (The pitiful performance was hard to watch; His abject failure was devastating).

✅ Immediately means without delay, happening right now (She called him immediately after the meeting).

✅ Straightaway means at once or without hesitation (He answered the question straightaway).

✅ Both words describe something happening right away.

✅ Immediately is more widely used and often refers to promptness and exact timing involving urgent situations, while straightaway is more informal and relaxed, often heard in British English (When the fire alarm sounded, we evacuated the building immediately; I'll start the project straightaway).

✅ Rickety means unstable or likely to collapse, especially due to old or poor construction (The rickety chair wobbled dangerously).

✅ Decrepit means worn out or weakened by age, and can refer to both people and objects (The decrepit house was barely standing).

✅ Both words describe things that are old and in poor condition.

✅ Rickety is more often used for an object's physical instability, while decrepit can refer to wider physical weaknesses such as deterioration and aging.