✅ Wrong means incorrect or mistaken (Your answer was wrong — please try again).

✅ Fallacious refers to reasoning or arguments that are misleading or based on incorrect logic (His fallacious argument sounded convincing but was logically flawed).

✅ Both words describe something incorrect.

✅ Wrong is commonly used for everyday mistakes, while fallacious is typically used in the context of arguments or reasoning (I took a wrong turn on my drive and ended up lost; The fallacious reasoning in the debate was quickly exposed).

✅ To block means to stop or prevent something from progressing or happening (The stress of learning how to use this new software has blocked my creative side).

✅ To obstruct means to create obstacles that make it difficult for something to happen, often on purpose (Our manager refused to share important information during the meeting, which obstructed our progress on the project).

✅ Both words involve creating barriers or stopping movement.

✅ Block implies a more definitive interruption or barrier, while obstruct often implies intentional or systematic interference that makes it difficult to achieve progress (Negative thoughts often block my ability to see the positive side of situations; The legal team tried to obstruct the investigation by withholding evidence).

✅ Grateful means feeling or showing thankfulness for something received (I'm grateful for your help with the project).

✅ Appreciative means expressing or recognizing value or worth, often in response to kindness or effort (The audience was appreciative of the performer's talent).

✅ Both words describe feeling thankful or recognizing value.

✅ Grateful is more commonly used in response to personal favors, while appreciative suggests a broader recognition of effort or quality (I'm grateful you can water my flowers while I'm out of town; The students were appreciative of the teacher's hard work).