diff --git a/docs/source_docs/qb/hcs.rst b/docs/source_docs/qb/hcs.rst
index 3cff9d03152ebe7bb4e5a76cc006478cf82c7401..2e7f9f80dfccc1f44295b11359034625cbde73ce 100644
--- a/docs/source_docs/qb/hcs.rst
+++ b/docs/source_docs/qb/hcs.rst
@@ -6,7 +6,7 @@ Clustering in the HCS
 
 The HCS is the simplest non-trivial particulate gas-solid system. The continuum
 gas-phase is initially at rest. The particles are uniformily distributed in space
-and have zero momentum in all three directions. However, the particle pecular
+and have zero momentum in all three directions. However, the particle peculiar
 velocity is non-zero, quantified by an initial *granular* temperature,
 :math:`T_0`. The system is periodic in all directions and no external forces act
 on the system. Under homogeneous conditions, the granular temperature, :math:`T`,
@@ -60,7 +60,7 @@ the ideal :cpp:`BVK2` DNS drag law is applied, see [BvK07]_, [TPKKv15]_.
 
 
 Three replicate systems are simulated with MFIX-Exa 19.08, differing only
-in initial particle locations and pecular velocities. The particle kinetic
+in initial particle locations and peculiar velocities. The particle kinetic
 energy is averaged in the simulations (red) and  compared to the analytical
 granular temperature (black) of the HCS as a function of time in the figure
 above. The kinetic energy :math:`KE / KE_0` decays by two to three orders of