✅ 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).

✅ Notice means to become aware of something or someone through observation (She didn't notice the typo in her report). 

✅ Perceive refers to becoming aware of or interpreting something through the senses or the mind (He could perceive the tension in the room).

✅ Both words involve awareness of something through observation or experience. 

✅ Notice is often used for physical or immediate observation, while perceive can include deeper understanding or intuition (He didn't notice the changes in her mood; She could perceive the hidden meaning behind his words).