✅ An agreement refers to a mutual understanding or arrangement between parties (They reached an agreement on the contract terms). 

✅ A covenant is a formal, solemn agreement or promise, often binding or sacred (The ancient covenant was believed to hold divine significance by the tribe). 

✅ Both terms describe mutual commitments between parties. 

✅ Agreement is used in everyday contexts and can be casual or formal, while covenant implies a deeper, more serious commitment, often with legal or spiritual connotations (They signed an agreement to share the costs; The covenant was sealed with a symbolic ritual).

✅ Nervous means feeling or showing anxiety or apprehension (I was nervous before my big presentation). 

✅ Timorous describes a person who is timid or full of fear, often to the point of shyness (The timorous child hid behind her mother). 

✅ Both words describe a state of being afraid or anxious. 

✅ Nervous can refer to temporary feelings of anxiety, while timorous suggests a more ingrained, habitual fearfulness (He was nervous about his job interview; My timorous nature made it hard for me to speak up in class).

✅ Possibly means that something might happen or be true (She could possibly be late due to the traffic). 

✅ Conceivably suggests that something is imaginable or within the realm of possibility, though it may be unlikely (Conceivably, he could become the next president). 

✅ Both words indicate that something is within the bounds of possibility. 

✅ Possibly is commonly used for general scenarios, while conceivably often suggests a stretch of the imagination or a less likely outcome (He could possibly join us later if his meeting ends early; Conceivably, the book could become a bestseller).