Molecular communication (MC) leverages the transmission of information through patterns of molecules, mimicking biological systems to address various technological challenges. This study focuses on particle-based simulations (PBS) of molecular communication, particularly comparing the performance of fully absorbing (FA) and partially absorbing (PA) receivers. In real-world scenarios, receivers are PA because environmental factors often prevent complete absorption, leading to partial interactions with molecules or signals. Motivated by this here the author compare the performance of FA and PA receivers. Our simulations were conducted with a fixed transmitter-receiver topology, involving two receivers placed at different locations. The cumulative number of molecules absorbed over 30 s was calculated, accounting for the random movement of molecules via Brownian motion. The results show that the PA receiver outperforms the FA one, especially in mitigating intersymbol interference (ISI). Molecules absorbed at the back side of the receiver, which likely belonged to previously transmitted signals, contribute significantly to ISI. This finding is critical in understanding the dynamics of molecular diffusion and optimizing receiver design for practical MC systems. This paper validates the findings of an asymptotic model through PBS and offers insights into improving molecular communication systems for real-world applications.